Priyank Sharma
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MediaKit reports not enough space on device for requested operation

Feb 12, 2017

[dropcap]I[/dropcap] recently got hold of a Toshiba Canvio 3TB external hard disk drive and was trying to format it using Disk Utility. To my surprise, I encountered a rather weird error that mentioned MediaKit not having enough space to perform the operation. The exact error message being,

[code]MediaKit reports not enough space on device for requested operation.[/code]

Though it initially felt like my brand new HDD was a waste now, the solve was not really rocket-science – rather pretty straightforward. So before I tell you how to fix this, let’s first try to understand what the error really meant?

[custom_headline type=”left” level=”h2″ looks_like=”h5″ accent=”true”]What’s the cause?[/custom_headline]

This type of error is generally caused when your EFI partition is below 200 MB. Mac requires an EFI partition of at least 200 MB to perform any Disk Utility function on an HDD. If your drive came factory formatted in NTFS, chances are your EFI partition would be lesser as Windows can work with a minimum of 100 MB.

What is EFI partition you ask? Well, the EFI system partition (ESP) is a small partition formatted with FAT32, usually 100 MB, which stores the EFI boot loaders for the installed system and applications used by the firmware at startup.

[custom_headline type=”left” level=”h2″ looks_like=”h5″ accent=”true”]So how to fix this?[/custom_headline]

Before we begin,

[alert type=”danger” close=”false” heading=”Warning”]Please note that all data on the HDD will be lost. I do not take any responsibility whatsoever in the unlikely event that your HDD gets bricked. By following these instructions, you agree to take full responsibility for the consequences.[/alert]

Alright, now let’s fire up [highlight type=”dark”]Terminal[/highlight] to get the name of the HDD you are trying to fix. Type the command below to list down all drives. Look for the label “external, physical” and note its Identifier. In my case it’s disk2. Could be different for you.

[code]diskutil list[/code]

[image src=”https://priyanksharma.com/img/mediakit-reports-not-enough-space-on-device-for-requested-operation-1.jpg” alt=”MediaKit reports not enough space on device for requested operation” type=”rounded” float=”none” title=”MediaKit reports not enough space on device for requested operation”]

Now let’s force unmount the disk (and all volumes on it) by typing in,

[code]diskutil unmountDisk force disk2[/code]

And then write zeros to the boot sector by typing in,

[code]sudo dd if=/dev/zero of=/dev/disk2 bs=1024 count=1024[/code]

You will be asked to enter your administrator password. Go ahead and do it. Note that entering a password in Terminal will cause your cursor not to move. Your input will be accepted anyway.

[image src=”https://priyanksharma.com/img/mediakit-reports-not-enough-space-on-device-for-requested-operation-2.jpg” alt=”MediaKit reports not enough space on device for requested operation” type=”rounded” float=”none” title=”MediaKit reports not enough space on device for requested operation”]

Finally, let’s go ahead and partition it. Again, in my case it’s disk2. Could be different for you. Type in,

[code]diskutil partitionDisk disk2 GPT JHFS+ “Canvio” 0g[/code]

Where Canvio is what you want to name your HDD. This will also format your drive and make it ready for use.

[image src=”https://priyanksharma.com/img/mediakit-reports-not-enough-space-on-device-for-requested-operation-3.jpg” alt=”MediaKit reports not enough space on device for requested operation” type=”rounded” float=”none” title=”MediaKit reports not enough space on device for requested operation”]

That’s it, you are done! Do share your feedback/experience in the comment section below.

[alert type=”info” close=”false” heading=”Note”]If for some reason, you are asked to enter your password again when performing basic functions on the HDD (like creating folders), unmount and then mount the disk again. That should resolve any issues.[/alert]

[gap size=”50px”]

[author title=”About the Author”]

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    400 comments

  • James Hopkirk Mar 22, 2017
    Reply

    You are a legend, thank you so much! Total lifesaver.

    • Priyank Sharma Apr 17, 2017
      Reply

      Thanks for your comment James. Glad this article helped you. 🙂

      • L.L. Dec 1, 2017
        Reply

        Yes, you are THE MAN!

      • Le Dec 13, 2017
        Reply

        thank you very much

      • Marco From Tinder Jan 22, 2018
        Reply

        This worked perfectly. Thanks for this! I’d like to point out that I had an issue trying to decide if the last bit was Og or 0g (a zero on my MacBook Pro looks differently. So I didn’t type a zero the 1st time and had to do it again to make sure that wasn’t the error I was making)

      • sbh Feb 7, 2018
        Reply

        Hi Priyank,

        When you write “Please note that all data on the HDD will be lost. I do not take any responsibility whatsoever in the unlikely event that your HDD gets bricked,” you mean the external hard drive I am trying to format, right? Is there any risk to losing data on my laptop itself? I am going round in circles: trying to make space on the laptop by moving data to the external WD. Can’t format it, so can’t move things, and don’t have another external drive to make a backup of the laptop! There is no data on the external WD-HDD, so I don’t mind if that get’s lost!

        • Priyank Sharma Feb 21, 2018
          Reply

          Yes, you are right. The data on the external HDD which you are trying to fix.

      • Fred Feb 8, 2018
        Reply

        dude!

      • Gabriel Apr 5, 2018
        Reply

        MAN, Tried everything but this trick works, you’re my hero !

    • El Grande Rojo Feb 21, 2018
      Reply

      You sir are a steely-eyed missile-man! Thanks!!! 🙂

    • Greg Ravensworth Feb 24, 2018
      Reply

      Perfect, and the only, btw, instructions on the internet I could find worth understanding. Saved 2 drives!

    • Tom Staple Mar 7, 2018
      Reply

      Yep, LEGEND. Had managed to screw up internal drive by messing with windows, and couldn’t re-put OSX back on. Your guide worked like a charm. Thank you.

    • skyblue Mar 21, 2018
      Reply

      Thank you! it helped!

    • Tim Hetherington Apr 6, 2018
      Reply

      Thanks Priyank

      Simple, clear instructions. That work!

    • John Sep 22, 2018
      Reply

      awesome. thank you this works perfectly

  • Andreas Apr 24, 2017
    Reply

    You made my day. Don’t know how many people used your manual and are not able to say thanks. Thank you very much for your time and effort and sharing your knowledge with us 🙂

    Thumbs up – greets from Austria!

  • MP Apr 26, 2017
    Reply

    This is fantastic! Thanks so much!!

  • NikkyDeo May 3, 2017
    Reply

    You are AMAZING! I’m travelling and spent $200 on a HD that was beginning to feel useless. Hurrah! I can backup all my photos now thank you! <3

  • Alyssa May 7, 2017
    Reply

    Thank you so much, Priyank! Your clear and concise directions were so very easy to follow, and it worked for my 8TB Seagate. I was fearing I got a bad drive. Thanks to you, I don’t have to return a perfectly fine drive! I appreciate you writing this up for people who need help!!

  • Reply

    You desrve a trophy! you nailed it! you make this looks so easy! thanks!

    • Priyank Sharma Jun 4, 2017
      Reply

      Nicolas, comments like these are what inspire me to write more. Thank you!

  • Scott May 19, 2017
    Reply

    One of the best written procedures for this.

    Thank you for taking your time to post this.

  • Claudia Jun 3, 2017
    Reply

    This worked for me too. Thank you!

  • Nick Jun 4, 2017
    Reply

    This was so easy to follow. Thank you!

  • Kyle Jun 6, 2017
    Reply

    Please marry me! You saved my life here, man!

  • Mohan Jun 6, 2017
    Reply

    Thanks a ton Priyank… Saved a lot of time with this.

  • Rachit Sethia Jun 9, 2017
    Reply

    you are a lifesaver!

  • Steve Jun 17, 2017
    Reply

    This was super easy and really helpful – thanks!

  • Jo Jun 17, 2017
    Reply

    You totally saved me! Thank you for setting it all out so clearly – was so easy to follow! You are a legend and a life saver! 🙂

  • Kevin Jul 1, 2017
    Reply

    It worked for me…!!
    Thanks
    Sir try to make a YouTube video.

  • Felipe Jul 3, 2017
    Reply

    THANKS A LOT!! I was scared that the HDD I’d bought didn’t work at all. But you saved me! Thanks

  • KF Jul 4, 2017
    Reply

    This really is clear and helpful. Excellent work. ‘

    Thanks!

  • Emily Jul 5, 2017
    Reply

    I am always a little nervous about following online instructions for something like this, but it worked perfectly and simply for two different external HDs that I needed to use. Thank you so much! I haven’t found any other instructions as simple and effective as these and I would have been in a real bind without this.

    • Priyank Sharma Jul 8, 2017
      Reply

      Emily, I’m glad this article helped you out. Thanks for taking the time to comment. 🙂

  • Reply

    OMG!!! I’ve been prowling around the internet trying to fix my screw up and BAM!!! It was as easy as you outlined!! You’re a lifesaver!!! Thank you, Thank you, Thank you 🙂

  • Robert Jul 10, 2017
    Reply

    You sir is a genius. 🙂 Thank you for posting this, saved my day. Cheers from Croatia

  • tommy Jul 16, 2017
    Reply

    Thanks Priyank. That was frustrating for a moment until your method worked

  • Joanna M Jul 16, 2017
    Reply

    This was great thank you, I had tried another thread similar that did not work. Thank you so much, saved me from have to call WD.

  • Amy Jul 17, 2017
    Reply

    Priyank,

    THANK YOU!!!

    The instructions for reformatting that came with my new WD HDDs were totally frustrating and ultimately useless–leading me to all sorts of error messages. This took me a different, much simpler, route.

    Great explanation, and it was helpful to have screenshots to ensure I was doing the right thing. 🙂

    Thanks, again!

    Amy

    • Priyank Sharma Aug 5, 2017
      Reply

      Thanks for commenting here, Amy. I’m glad this article was useful for you. 🙂

  • MARCEL Jul 26, 2017
    Reply

    YOU ARE THE GUY! THANK YOU SO MUCH!

  • Alma Jul 28, 2017
    Reply

    Thank you so much Priyank! Your explanation and step-by-step guide with pictures worked perfectly! Saved so much time by following your advice. Thanks again!

  • Juan Jul 31, 2017
    Reply

    Worked perfectly! Thanks so much!

  • Kees de Leeuw Aug 4, 2017
    Reply

    Hi Priyank,
    This is great. I just bought a WD Elements 2 TB to be used for backups of my Mac. The instructions told me to format the disk using Mac OS Extended (journaled). When I tried it, I got the same error as you did. I googled it and initially did not find a solution. Went back to the shop, got some rude treatment and basically was told I was an idiot and that it all would work if I did it properly. So in the end I went home, got of course the same error message and did some more googling. I found your solution and it works perfectly. So thanks a million.
    Kees

  • Lyn Aug 13, 2017
    Reply

    Thanks so much for such clear instruction … works perfectly

  • Nigel Aug 18, 2017
    Reply

    Many thanks.
    Silly me for thinking disk utility could format a disk!

  • Balaji Aug 21, 2017
    Reply

    Thanks for your help. I just bought my new Mac & My passport. Its works now

  • Pawan Aug 30, 2017
    Reply

    Awesome Brother… I spent whole week to solve this.. Don’t have words to say thanks..

  • Dan Spector Sep 7, 2017
    Reply

    Excellent article, easy to follow. Solved the problem for me.

    Only note is that you might mention how entering the password in Terminal works; I had a brief panic when it was rejected, twice. (I guess I was mis-typing, but tough to tell with the cursor not moving.) Still, an invaluable aid.

    Thank you very much.

    • Priyank Sharma Oct 1, 2017
      Reply

      Oh yes, Dan. That would make this article entirely fool-proof. Amended.

  • Greg Thurbon Sep 15, 2017
    Reply

    Priyank, you are fantastic. Has been driving me crazy and you helped me first time. Thank you very much.

  • Jon Sep 24, 2017
    Reply

    sudo dd if=/dev/zero of=/dev/disk2 bs=1024 count=1024

    I get “Operation not permitted”

    Please help!

  • T Shane Gilman Sep 30, 2017
    Reply

    Not all heroes wear capes.

    Priyank….you’re my hero.

    This worked on my fresh-out-of-the-box WD SSD My Passport 512GB with my 2016 MacBook (High Sierra 10.13.1 Beta (17B25c)), FYI.

    • Priyank Sharma Oct 1, 2017
      Reply

      Wow, Shane. This is probably the best comment I’ve received in here. Thanks much!

  • Davina Sep 30, 2017
    Reply

    I would not have been able to back up my Mac without your instructions. Thank you so much for this and for making your instructions clear and easy to follow, much appreciated!

  • Charlotte Sep 30, 2017
    Reply

    Thanks Priyank! This is definitely the best answer I found.

  • Caroline Oct 1, 2017
    Reply

    Thank you for posting! much light and love,

    CR

  • Mike Oct 1, 2017
    Reply

    Thanks Priyank, I just purchased a 3TD external drive that failed on everything I did in Disk Utility. I watched YouTube videos and read multiple forms with no help.
    Then I found your article and “BINGO” my brand new drive now works.
    You’re a saviour!

  • Joris Oct 1, 2017
    Reply

    This 100% worked. Never touched terminal in my life before, but this is an easy and quick solution. Thanks!

  • Steve Lea Oct 2, 2017
    Reply

    You are my hero! I had tried everything I could think of to fix my drive after stupidly letting my Nvidia Shield format it. I honestly thought it was ruined until by sheer fluke I found this page and thought I may as well give it one last shot. Thank you ever so much!

  • IATMG Oct 3, 2017
    Reply

    Thank you! This worked on my new 6TB WD external. You rock!

  • Meng Oct 3, 2017
    Reply

    Hi Priyank,
    Thank you so much for this. It really works.
    However, I had run into some issues (due to my stupidity), wondering if u can see the email I had sent to you.

  • David Cothran Oct 5, 2017
    Reply

    Thank you so much for taking the time to post this very helpful tip. It got me out of a tight spot quickly and easily.

  • BethN Oct 6, 2017
    Reply

    Like everybody above says – you’re a lifesaver! Brand new external drive completely useless, total Disk Utility failure — but these simple steps fixed it instantly! Thank you so much!!!

  • Andrew Oct 6, 2017
    Reply

    Your a F*#^ing Genius. Instructions so easy to follow. Thank you

  • Bernard Oct 8, 2017
    Reply

    Hi Priyank, thanks for the info. Just one clarification: what password am I supposed to use? Is there a way to recover it? Thanks

    • Priyank Sharma Oct 18, 2017
      Reply

      Hi Bernard, password is the same one you use to login to your machine. With Admin rights, of course.

  • Alex Oct 8, 2017
    Reply

    Bought a WD 2TB Elements and couldn’t format it with my mac (ver 10.13) but you guide helps me with that. I wish i could give you a hug! / Alex Sweden

  • Azeem Oct 9, 2017
    Reply

    Thank You Very Much. The entire web couldn’t help me with this but you did, so frustrating even though i just got the HardDrive to spend 2 hours trying to format it because Apple is useless. Thanks again!

  • Matheau Dakoske Oct 9, 2017
    Reply

    I was converting a brand new Western Digital Elements 4TB from ExtFAT to HFS+ using macOS 10.13’s Disk Utility. It failed mid-process (I don’t recall the error) and bricked the device.

    This really saved me. Thanks for the helpful article!

  • Bernie Oct 11, 2017
    Reply

    I bought a Samsung SSD 850 Evo from best buy because of the excellent reviews I read. Before buying it I watch videos on you tube and ask Samsung support questions and just to make the story short nothing work as I was expecting. Samsung support was useless and best buy at least they try to help with no luck. I was about to return the unit for a second time and for good and try a different brand, until and finally came up with your solution and it Worked Like a Charm!! I am an IT person but this was time consuming and very frustrating.
    Thanks a lot Priyank you’re the man!!!

    • Priyank Sharma Oct 18, 2017
      Reply

      Bernie, I’m so happy that this post worked for you. Thank you for commenting. 🙂

  • Daniel Oct 13, 2017
    Reply

    Thank you so much! After spending hours in search for solutions your article helped me out! Works fine!!!!

    All the best!

    Daniel

  • Paul van Dyk Oct 14, 2017
    Reply

    As one if the other comments stated… You are a legend, after many trail and errors and following a few guides this one was by far tje clearest a’d most efficient. Thanks!

    • Priyank Sharma Oct 18, 2017
      Reply

      I’m glad it worked for you. Only wishing you were the real PvD. 🙂

  • selva Oct 16, 2017
    Reply

    Hi Priyank,

    I purchased 500GB SSD and i been looking to format it and got the error ! Your post helped me a lot and saved me a lot time… Thank you so much really

  • Axll Oct 18, 2017
    Reply

    Dear Priyank, I have a macbook pro with 3 partitions. I clean installed Sierra on partitions 1 replacing El Capitan. Then some of my apps didn’t work on Sierra and I decided to restore El Capitan from a Timemachine external backup. But I got exactly the same “MediaKit reports not enough space on device for requested operation” message and I can’t erase my partition 1. I have tried several terminal instructions as well as partially yours, but with no success at all. I temporarily have installed Sierra on partition 2 to have access to all my data on partition 3 and find a solution for how to erase and reformat my partition 1. I do have access to this partition, but just can’t erase and reformat it.
    Do you have any solutions on internal partition disks with MediaKit message? I sincerely appreciate your reply in advance.

    • Priyank Sharma Oct 18, 2017
      Reply

      Hi Axll, I’m afraid but this article deals only with external HDDs. I’ve personally never tried this method on an internal drive. Let us all know, if it works for you.

      • Axll Oct 20, 2017
        Reply

        Priyank, I’ve not come up with a solution yet. It’s supposed to be done thru Windows and bootcamp which I don’t have it on my system. As soon as I could create EFI boot partition on my internal Mac HDD, I will let you know the procedure.
        BTW, do NOT delete the EFI boot partition (209 MB) on your internal partitions ever. Because you will not be able to erase and reformat them again, if ever needed.

      • Axll Oct 21, 2017
        Reply

        Hi Priyank, it took me a couple of days searching online and doing a lot of trial and errors to get the 209MB EFI partition back to my internal 500Gb ssd. I tried as many terminal commands as possible with and without bootable USB thumb, but had no success. Anyways, this is my final narrow down solutions of this experiment:
        There are 2 easy alternatives for this issue. The first solution deals with using of the Boot Camp (find this on utube). But since I don’t need the Boot Camp, I didn’t even try this.

        My final solution takes a few hours and is very straightforward:

        1. I backed up all the data on my internal drives to an external hard drive. I also made an up to date Time Machine backup of my primary OS X partition to restore it later on; so I didn’t have to install the applications all over again.
        2. I had a bootable USB thumb (an EL Capitan or Sierra installation USB will do the job). You need this because we are going to erase the whole internal disk in the next step.
        3. Boot with USB thumb. Open the Disk utility and select the “main” internal disk. Then choose “Erase” from the top options. On the pop up window, give a name to your disk, choose OS X Extended (Journaled) and Guild partition map. Finally click the “Erase” button and voila. The disk is formatted having the 209MB EFI partition back. If you choose any partitions of the internal disk here, you can’t erase it and you will get the famous Mediakit error due to the lack of EFI partition.

        You can partition the internal disk right here with Disk Utility due to your needs.
        I suggest to make at least 2 partitions: a small 60 to 70 GB dedicated exclusively to OS X (if you are a gaming fan, make it larger). This makes the Time Machine backup of the partition quite fast. The rest goes to personal data and archive that I make a backup of them separately on external drive.

  • David Iwatsuki Oct 22, 2017
    Reply

    As a Windows and Linux user, I am often perplexed on how difficult it can be to get something to work on OS X , like formatting a thumb drive. Thanks for your tip since it allowed me to build a High Sierra boot drive for upgrading my son’s Mac-Mini to an SSD.

    • Priyank Sharma Oct 23, 2017
      Reply

      Thanks for your comment, David. I’m glad the article was useful to you.

  • charles Oct 22, 2017
    Reply

    phantastic – clear, brief, solution oriented

    maybe worth to mention in the explanation (just to edit for idiots like me) to pay attention to disk numbers. you disk in question was 2, others might be 1 or whatever. like the comment to change the disk name.

    many many thanks!

    • Priyank Sharma Oct 23, 2017
      Reply

      Thank you, Charles. I have already mentioned that in the article. 🙂

  • Mark Oct 23, 2017
    Reply

    Awesome. Thank you. Just awesome.

  • Romulo Nov 29, 2017
    Reply

    Thank you! You are a rock star!

  • Marosh Nov 30, 2017
    Reply

    Thank You,
    Its work.

  • Art M Altman Dec 1, 2017
    Reply

    Ha! You saved me so much time and aggravation — thanks!!! BTW I followed these instructions on a new external Seagate 5TB on a MacBook Pro running High Sierra. Should these instructions be any different on High Sierra? I recall that High Sierra has a new file system format but I don’t know whether that is just for the internal SSD. Thanks!!!

    • Priyank Sharma Dec 19, 2017
      Reply

      Great question, Art. I haven’t exactly tried this method on High Sierra. However, I don’t see a reason why it should not work. I guess someone has reported it working on High Sierra as well. Read through the comments.

  • J Dec 1, 2017
    Reply

    Star!!!! Solved such a big problem that Apple Genius had no clue… Bravo!!!

  • Shiva Dec 2, 2017
    Reply

    Wasted 6 hours before reading your post. Thank man you’re a genius.

  • anonymous Dec 3, 2017
    Reply

    Nice and clear explanation!

  • Boyce Dec 4, 2017
    Reply

    Thank you, worked perfectly.

  • Tiff Dec 4, 2017
    Reply

    Thank you so much! I just bought a new HD and this is the only fix that actually worked!

  • Rick Dec 5, 2017
    Reply

    Thank you very much, Priyank.

  • Ben Dec 5, 2017
    Reply

    Priyank, I’m piling onto all the thank-yous with everyone else: THANK YOU! Your instructions are clear, you clarify and detail what’s happening. Strangely, if drive makers just partition their drives with the extra 100MB of boot space, we wouldn’t every-single-one-of-us need to go through this hassle (needless to say all those people who called in to their customer service reps as well)!

    • Priyank Sharma Dec 19, 2017
      Reply

      Thank you for your comment, Ben. I agree with you. HDD makers need to take care of this at production level itself.

  • So Happy Dec 7, 2017
    Reply

    oh my god you’re a legend and a genius thank you so much! I thought i would have to return it!

    • Priyank Sharma Dec 18, 2017
      Reply

      I like how you’ve used a name and email to accurately portray your feeling. My pleasure! 🙂

  • Serge Dec 7, 2017
    Reply

    Thank you sir,
    I have been browsing the internet for 3dAys now with no luck.

    I bought a Samsung SSD 850 Evo from best buy because of the excellent reviews I read. Even my wife’s PC would not manage to format properly.

    Thank you thank you

  • Rabah Rahil Dec 7, 2017
    Reply

    Life saver!!! Thanks so much!

  • Julio Dec 9, 2017
    Reply

    Worked like a charm! Excellent!

  • Mike Ferguson Dec 9, 2017
    Reply

    Thanks very much! Big gratitude from Denver, CO

  • Phil Dec 10, 2017
    Reply

    Superstar – this worked for me – saved me going and replacing what appeared to be a bricked disk – thank you!

  • Charles Dec 10, 2017
    Reply

    Thanks much for this article. Helped when DiskUtility would not format my new drive. Very helpful!

  • Ben Bauman Dec 10, 2017
    Reply

    Well done! Just had to do this for my new WD Passport 2TB – couldn’t get Drive Utility to work with it until you helped out here!

  • Bhanu-nandini Dec 10, 2017
    Reply

    Wow! I’m impressed! Truly well done!

  • Squid Dec 10, 2017
    Reply

    Thank you SO much. Your instructions were clear and perfect. ?? ?

  • SeaPoole Dec 11, 2017
    Reply

    Thanks so much for the clear explanation, screenshots and especially your willingness to do this work to help us out.

  • Daniel Robinson Dec 11, 2017
    Reply

    I thought my drive was toast! Mr. Sharma, you have made me a very happy person. You’re the best!!!

    • Priyank Sharma Dec 18, 2017
      Reply

      Thanks for commenting, Daniel. I’m glad the article helped you out. 🙂

  • Sam N Dec 11, 2017
    Reply

    I’ve been working through this issue all night and this solved it in less than 10 min. thank you!

  • Michael Allie Dec 11, 2017
    Reply

    Right now I am pretty unhappy at WD for giving me a Windows formatted drive without any instructions or assistance for reformatting as a Mac drive. But I am VERY THANKFUL for you and your generosity and knowledge that you share with us. Solved a big problem for me.

    • Priyank Sharma Dec 18, 2017
      Reply

      Thank for your feedback, Michael. I’m so happy this article helped you. 🙂

  • Prasad Dec 13, 2017
    Reply

    Sorry, this didn’t help me Priyank. I’ve bought a new 2TB HDD, which has thrown “Mediakit reports not enough space on device for requested operation” while I try to erase. I’ve faced similar issue with a couple of pen drives in the past, being a rookie on Mac, I’ve tried erasing into other formats(like Mac Journaled, etc.) and finally to ExFAT. They worked. Similarly, I formatted my 2TB HDD to Mac Journaled as the first step of mine, and then I followed ‘what has been mentioned in this article’ as the second step, my OS(High Sierra) doesn’t even read the 2TB HDD now. Apart from internal SSD of Mac, it show two partitions now : a) disk3s1 of 32Kb and a b) disk3s2(Flash player) of 19.9Mb; both of type ‘Not mounted’. It’d be really great if you can take it personal, and help me with this? Many Thanks in advance, mate.

    • Priyank Sharma Dec 18, 2017
      Reply

      Hi Prasad, few questions.
      1. You mentioned that you formatted the HDD to Mac Journaled. Did it complete?
      2. When you view the HDD using Disk Utility, does it give you the “Mount” option upon drive selection?
      3. Can you try redoing the entire process again, ensuring you enter the correct disk name?

  • Stephen Dec 14, 2017
    Reply

    Thanks so much, Struggling to find solution with Seagate 5Gb PC until I found your post. Cheers

  • Roy Dec 14, 2017
    Reply

    It works for me. Thanks!

  • shreya mungekar Dec 14, 2017
    Reply

    thank you so much! Hats off

  • AK Dec 14, 2017
    Reply

    You full-on saved the day! Thank you, Pryiank. I’m not sure why this isn’t part of Disk Utility’s erase process, but I’m so thankful you’re picking up the slack with this one!

    One item of note – after the process finished (at least on macOS 10.13.1), macOS recognized the disk, however I noticed I could not create a folder without needing to re-enter my password. This is, I’m assuming, because the process that originally mounted it was not technically “me” (being it was the “super user” through terminal). I unmounted the disk, removed and re-plugged in to the USB port, and then macOS allowed me to create a folder as “me” without asking for a password. Not sure if this is helpful to mention, but wanted to just in case!

    Again, THANK YOU!!

    • Priyank Sharma Dec 18, 2017
      Reply

      Thank you for your detailed feedback, AK. You will be happy to hear that I have updated the article. 🙂

  • Melyssa Dec 15, 2017
    Reply

    This solved my problem and your directions were very clear! Thank you so much!

  • Tom Dec 16, 2017
    Reply

    I have a similar suggestion as did charles. I know you mentioned it in the article, but remember that people without Terminal experience may robotically copy and paste your commands. I did change the disk number for the initial commands (as you did suggest), but forgot to do so on the last command and ended up reformatting the wrong drive! At least I had it backed up and only lost some time.

    So to make it closer to idiot-proof, maybe just add a comment to double-check the disk number, especially for that final command!

    Thanks so much for your great help with this. I too thought my WD 2TB Elements drive would need to be returned to Amazon, but your article saved me a great deal of trouble.

    Now if only I could keep myself from making more trouble!

    • Priyank Sharma Dec 18, 2017
      Reply

      Thank you, Tom for your detailed feedback. You will be happy to hear that I have updated the article. 🙂

  • Eddy Dec 16, 2017
    Reply

    Many thanks Priyank : between my son Charles who was able to read you and your guidance my day is saved !

  • Chris Dec 17, 2017
    Reply

    After OS High Sierra upgrade, my USB drivers were not writeable any more because of NTFS format. Using your way of format disk were very straight forward. Thank you so much.

  • James Dec 17, 2017
    Reply

    Worked like a dream on my WD Elements drive! Thank you 🙂

  • mark boyarsky Dec 18, 2017
    Reply

    THANK YOU VERY MUCH.

  • Cade Dec 18, 2017
    Reply

    Worked like a charm!! Thanks for sharing the knowledge!

  • Steve Dec 18, 2017
    Reply

    Thanks for your informative post. It all looks like it has worked! Yay!

  • Stephen Angeloni Dec 18, 2017
    Reply

    Fantastic !
    DiskUtil wouldn’t partition or format my drive and this did it.

    Thanks a million.

  • faisa Dec 19, 2017
    Reply

    Great 🙂
    That’s why we say knowledge is everything. I was about to return my new drive.

    Thanks

  • Frederik Jan 16, 2018
    Reply

    THANKS!!!!!!!

  • jeff Jan 17, 2018
    Reply

    thankyouthankyouthankyouthankyou

  • JJ Jan 17, 2018
    Reply

    Legend!! Worked for me.
    Initially I had a command not found error. However, I was booted from a USB install disk so didnt need the Sudo command at the beginning.
    Worked perfectly after that!

  • Thomas Jan 17, 2018
    Reply

    Hi Priyank,

    Thanks for this article, I’m hoping I can use it to solve a problem with an external drive my MBP (high sierra) no longer mounts properly.

    One question – I’m sorry if this has been asked already but you have a lot of comments and didn’t address this topic in your article:

    Q: At the partition step:
    $ diskutil partitionDisk disk2 GPT JHFS+ “Canvio” 0g

    Will this wipe (erase contents) of the said external drive? That is not an option for me…

    Thanks!

    • Priyank Sharma Jan 24, 2018
      Reply

      Hi Thomas. Yes, this will wipe everything off on your HDD. This article is intended for brand new HDDs only. 🙂

  • David Jan 18, 2018
    Reply

    Hello.
    I tried this and it worked but it formatted my external HD MAC OS EXTENDED JOURNAL and I need it to be EXFAT.
    Any input on that?
    Thank you.

    • Priyank Sharma Jan 24, 2018
      Reply

      Hi, David. Once your drive is formatted using this technique, means your MacBook can read it. Go ahead and fire Disk Utility and format it to whatever you like.

  • bestdamnUBER Jan 18, 2018
    Reply

    4 hdd that you helped me fix. Cheers!

  • Chase Jan 18, 2018
    Reply

    Awesome! I thought my new HDD was corrupt and your post saved the day. Thank you!

  • Alex D Jan 18, 2018
    Reply

    What a nice job, THANK YOU SO MUCH, you just saved my life I was taking forever to fix that because I was taking mad long in a wrong way, appreciate that!!!

  • Nate Jan 18, 2018
    Reply

    THANK YOU SOOOO MUCH!! Read/watched about a million things and tried most of them…nothing worked but THIS worked first try! Thanks so so much!!

  • gumi Jan 18, 2018
    Reply

    Thank you.
    It works

  • Blair Ballard Jan 20, 2018
    Reply

    Thanks so much! Work like a dream!

  • jonathan Jan 20, 2018
    Reply

    Lifesaver!! Thank you so much.

  • Ian Jan 22, 2018
    Reply

    Simple and straightforward — my hero.

  • Martin Dean Jan 22, 2018
    Reply

    Just wanted to add my thanks to all the others. I thought this was a drive problem, so I returned it and bought another one!

    Why are Western Digital and Seagate not giving your solution via their support sites? It mystifies me that they simply say ‘erase the disk and reformat using Disk Utility’.

    Anyway, thank you – I am very grateful

    • Priyank Sharma Jan 22, 2018
      Reply

      Thank you for your comment, Martin. I agree that WD and Seagate should offer this solution in their tech support.

  • Matthew Fries Jan 22, 2018
    Reply

    Thanks for this article complete with images. So helpful. Thought I bought a dead drive and now I’m back up and running.

  • Aaron Jan 23, 2018
    Reply

    Very helpful indeed.

    Thanks to your post I was able to remotely help a non-computer-savy relative who had this problem with a 1TB Western Digital drive by walking him through this and texting each line to type to let him use the new drive.

    Thanks for the very easy to follow steps, they work, and they are appreciated.

  • Tom Rethard Jan 24, 2018
    Reply

    You can be on my team anytime! Great step-by-step tutorial. (of course, I’m retired now….)

  • Dan Jan 24, 2018
    Reply

    Thank you so much! After so much frustration, your instructions solved my problem in less then 2 minutes.

  • Carter Jan 25, 2018
    Reply

    Thanks a million! Worked like a charm.

  • Justin A Jan 25, 2018
    Reply

    This was super helpful. You honestly just saved my project! Thank you so much!

  • Tinonguyen Jan 25, 2018
    Reply

    You saved my life! Thank you so much!

  • Reply

    Thanks a lot for this. Was very helpful. Cheers!

  • Scott Feb 6, 2018
    Reply

    Thanks!

  • DK Feb 6, 2018
    Reply

    You’re my hero. Thank you so much. I was ready to throw the external drive out the window and now I don’t have to:)

  • Aaron Walser Feb 6, 2018
    Reply

    Allow me to add my thanks to the well-deserved list here.
    I had already returned one external drive thinking it was faulty. So when the replacement arrived and the exact same thing happened, I knew it was me, not them. 🙂 I typed in the error code on the mighty Google and bingo! Your insightful and easy to follow instructions of awesomeness saved me from a night of ranting and raving about something that took less than 5 minutes to fix.

    MANY THANKS!
    AW

    • Priyank Sharma Feb 24, 2018
      Reply

      Thank you Aaron, for taking the time to comment in here. I’m glad my article helped you!

  • Ricardo Feb 7, 2018
    Reply

    Perfect, thanks!

  • Svein Frode Kvam Feb 8, 2018
    Reply

    Thank you, Priyank! You are now officially my tech-god!

  • Brooke Thompson Feb 8, 2018
    Reply

    Wow, thank you so much for posting this! who knows how long it would have taken for me to send my glyph drive back to the manufacturer and get fixed, let alone how much it would have costed!

    • Priyank Sharma Feb 21, 2018
      Reply

      Thanks for your comment, Brooke. I’m glad the article saved you from so much hassle. 🙂

  • Keely Feb 8, 2018
    Reply

    Thank you so much for this!! Worked like a charm.

  • Hal Feb 9, 2018
    Reply

    Many thanks. Clear, concise and helpful. The world needs more like you!

  • Brandon Smith Feb 10, 2018
    Reply

    Very helpful. Thanks!

  • Nate Feb 10, 2018
    Reply

    Very cool! This worked perfectly. Thank you!!!

  • K K Daga Feb 11, 2018
    Reply

    Thanks for the excellent solution provided. I had wasted 2 days trying to solve this issue. It hardly took 5 minutes to solve by following your suggested commands.

  • Prasanth Feb 11, 2018
    Reply

    Thanks a lot u made my day…..

  • Sylvia Feb 12, 2018
    Reply

    Lifesaver, Priyank! Thanks for the tips!

  • Boss Feb 13, 2018
    Reply

    Superb Priyank !!
    You are the best of the best !!!

  • Shilpa Feb 13, 2018
    Reply

    Thank you for this! Easily fixed all my problems in 2 minutes. Searched sooo much for a solution! Thank you thank you thank you!! 🙂

  • Andy Feb 14, 2018
    Reply

    AWESOME!! THANK YOU

  • SALVO Feb 15, 2018
    Reply

    THANKS MEN

  • Meagan Feb 15, 2018
    Reply

    Saved my life tonight! I was so worried my purchase had been a waste, but then I came upon your instructions, which were much easier to understand than others online. Thank you so much!

  • onkar k khullar Feb 17, 2018
    Reply

    thank you bro simply love u

  • samantha Feb 17, 2018
    Reply

    Did not work. Error message displayed every time.

  • Britaney Feb 20, 2018
    Reply

    Thank you SO much for this!! Total life-saver

  • Sam Verstocken Feb 21, 2018
    Reply

    Quick and lifesaving!

  • Ann Feb 22, 2018
    Reply

    I have just sorted out two Western Digital My Passports, before I upgrade from 10.10. to 10.11 and maybe even 10.12, using this advice. Wonderful, Priyank Sharma!

  • Rubl Feb 22, 2018
    Reply

    Awesome guide.. Was just thinking I had to sent my new ExHDD back for an exchange.. Thanks man!

  • Alejandro Godoy Feb 23, 2018
    Reply

    Aaaaand, yes, it works!
    Thank you.

  • Jeroen Feb 24, 2018
    Reply

    You made my day! Thanks a lot.

  • Jesús L. Feb 25, 2018
    Reply

    Thanks man, you really helped me with this.

  • Ronald Feb 25, 2018
    Reply

    Where would be without people like you? I started regretting buying this 4TB external drive for Timemachine backups but you saved the day! Thank you very much!

    • Priyank Sharma Oct 21, 2018
      Reply

      Thank you for your kind words, Ronald! I’m glad the article helped. 🙂

  • j Feb 26, 2018
    Reply

    Lifesaver, thank you!!

  • Duncan Webster Feb 27, 2018
    Reply

    Awesome Priyank, worked a treat, now backing up my 4TB of photos to the new 8TB Drive.

  • Ryan Feb 28, 2018
    Reply

    Many thanks. Your instruction was perfect.

  • Anji Feb 28, 2018
    Reply

    I can’t thank you enough for this! You are a super star!

  • Frank Dus Mar 3, 2018
    Reply

    It worked and helped a lot! Thx!

  • Sirje Mar 4, 2018
    Reply

    Worked like a charm! Saved my Seagate 3TB drive! These instructions were very easy to follow, thank you so much!

  • Robert McConnell Mar 5, 2018
    Reply

    Thank you, worked perfectly first time.

  • Fonz Mar 6, 2018
    Reply

    Thank you!

  • Michael Mar 7, 2018
    Reply

    thank you sir you have saved me a headache !

  • Deb Mar 10, 2018
    Reply

    You are my hero! Thank you so much!

  • varun joshi Mar 11, 2018
    Reply

    Priyank I am truly amazed by how ‘to the point ‘ you article is and how it solves the problem in such easy steps.
    I went through a lot of tuts and videos before landing onto it. You deserve a lot credit for this and please create a donate option on this page so that people can at least credit you a bit in their way. I would have certainly paid for this solution.

    • Priyank Sharma Mar 29, 2018
      Reply

      Thank you, Varun for your kind words. I’m happy the solution helped you. 🙂

  • S J Chiru Mar 12, 2018
    Reply

    Hi Priyank,
    Thanks. Now I know where to come when I have problem with my mac.
    SJC

  • Sila Mar 13, 2018
    Reply

    I spent two days and multiple websites trying to reformat my hard drive -and after hours and hours of loading to say it failed. I almost decided to return it, then I found this site.

    This was the most helpful and clear set of instructions and it actually worked instantly!

    THANK YOU!

    • Priyank Sharma Mar 29, 2018
      Reply

      Thank you for commenting, Sila. I’m happy the article helped you fix your HDD. 🙂

  • Jessica Mar 14, 2018
    Reply

    You are a hero. I have zero idea what I just did, but it worked! Thank you!

  • Jose Mar 14, 2018
    Reply

    AMAZING! you saved my disk! 🙂

  • Deb Mar 17, 2018
    Reply

    I am so computer illiterate and had tried so many ways to rectify the problem but yours was the only one I actually understood PLUS it worked! I was so focused on following your instructions to a “T”, I even named my disk Canvio! LOL, thanks for the help!

    • Priyank Sharma Mar 29, 2018
      Reply

      Hahaha, awesome Deb. I’m glad my efforts to make the article super easy to understand worked wonders.

  • Joye Mar 17, 2018
    Reply

    thanks for your help

  • Pierro Mar 17, 2018
    Reply

    You totally rock !!!

    Thank you !

  • Peter Mar 18, 2018
    Reply

    I was reluctant to touch the terminal but after reading the comments of successess I went ahead and it worked perfectly. Thank you

  • Linda Williams Mar 21, 2018
    Reply

    Thank you so much! You’re a life(harddrive)saver! 🙂

  • Joseph CM Mar 22, 2018
    Reply

    Thanks Priyank Sharma, your Blog came up from no where and helped me reformat my WD harddrive so easily. Thanks a bunch. Where did you learn all this?

    • Priyank Sharma Mar 29, 2018
      Reply

      I’m happy it did, Joseph. I had faced a similar issue as well, which made me look for a solution on various forums, discussing with peers and trying to understand a solve. 🙂

  • Sean Mar 23, 2018
    Reply

    Awesome. Worked perfectly. Thank you so much.

  • Gil Mar 23, 2018
    Reply

    whew… thanks a lot! Seems to happen often with Seagate. Glad to know there’s a solution.

  • Trip Shakespeare Mar 28, 2018
    Reply

    Successful on High Sierra 10.13.3

    Thank you sir.

  • Marcelo Mar 29, 2018
    Reply

    You nailed it to say the least.!
    What apple geniouses cannot explain you did it in a clear and fast way
    Apple doesn’t want or don’t know how to help people on this. I visited so many offcial apple’s forum. Nobody got a clue on this.
    From Argentina, Thanks a lot!

    • Priyank Sharma Apr 26, 2018
      Reply

      Thank you for your comment, Marcelo. I’m glad the article helped you!

  • John R Mar 30, 2018
    Reply

    Thank you SO MUCH. You saved me. I’m surprised Western Digital doesn’t think that some of its hard drive buyers might be Mac Users!

  • Simon Apr 1, 2018
    Reply

    I would just like to say thank you so much, I followed this after a few hours of getting nowhere and it worked within minutes. Now I can start to get my new drive set up for iTunes and all my new content.

  • mark burrows Apr 3, 2018
    Reply

    This was exactly what I was looking for. Thank you for the help!

  • Kat Apr 10, 2018
    Reply

    THANK YOU!!! I thought my disk was lost. This solution has correctly reformatted it. A very clear and good explanation of a common problem for Mac users.

  • Grant Apr 17, 2018
    Reply

    You’re the best! Thanks for helping!

  • Robin Apr 22, 2018
    Reply

    Hai Priyank. I tried to follow your solution, but received this message in Terminal:

    WARNING: Improper use of the sudo command could lead to data loss
    or the deletion of important system files. Please double-check your
    typing when using sudo. Type “man sudo” for more information.

    To proceed, enter your password, or type Ctrl-C to abort.

    Password:
    dd: /dev/Finec1: Operation not supported

    So its seems I am not allowed tot format this ex HD?

    • Priyank Sharma Apr 26, 2018
      Reply

      Hello Robin. First of all, the warning is precise. You will end up losing any data in the drive for sure. Secondly, looks like either you do not have Admin rights, or the command you entered has a syntax error. I would suggest you to try once again ensuring the commands are exactly as mentioned in the article.

  • Becky Marshall Apr 27, 2018
    Reply

    Worked for me! Great job on communication in this post, and way to be easily googled. Grateful.

  • Scott May 12, 2018
    Reply

    Priyank! Ditto to everything said by everyone else on this site, this was an AMAZING and super quick solution. Thank you so much!

  • Sasha May 16, 2018
    Reply

    Clear and precise instructions.
    Thank you, Thank you, Thank you.
    This is what COMMUNITY is about.

  • John Yingling May 16, 2018
    Reply

    Excellent work. This is super easy to follow. You’re the man!

  • Vladimir Jun 13, 2018
    Reply

    Thank you very much !!! You saved my day ).

  • JM Jul 3, 2018
    Reply

    Thanks!! It worked and then I re-formatted it to ExFAT, which worked as well! So much thanks!

  • Barbora Boyer Aug 13, 2018
    Reply

    You are the best!!! I had exactly the same problem with my canvio ready 3 TB. Without you detailed manual I would never be able to solve this problem. Thank you very much! You deserve only the best. Once more time thank you!!!

    • Priyank Sharma Oct 21, 2018
      Reply

      Thank you for your kind words, Barbora. I’m glad this article helped you. 🙂

  • William Aug 16, 2018
    Reply

    Sweetness. Worked like a charm. Thanks!

  • 4CardsMan Aug 19, 2018
    Reply

    Outstanding.

  • Tina Aug 25, 2018
    Reply

    You helped me a lot. Thank you

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