Home > Unmount Disk > Error Could Not Unmount Disk External Hard Drive

Error Could Not Unmount Disk External Hard Drive

Contents

share|improve this answer answered Jun 13 '14 at 6:24 Graham 11 Transmac worked for me also. Required fields are marked *Name Email Website Time limit is exhausted. Enjoy this tip? This should force unmount the volume: 3) Attempt again to perform whichever task caused your ‘Couldn’t Unmount Disk' error. (For example to Erase/Partition the disk). check over here

Author Alan SiuPosted on April 13, 2015Tags disk utility, diskutil, erase drive, mac, unmount 40 thoughts on “Fix for disk erase failed couldn't unmount disk” Randall says: July 14, 2015 at How much effort (and why) should consumers put into protecting their credit card numbers? As of now, Stellar Partition Manager doesn't resize or partition Boot Camp. When I go into Disk Utilities > Erase tab > change Volume Format to Mac OSX Extended > click erase, it keeps saying disk "Erase failed with the error: File system https://discussions.apple.com/thread/4503583?tstart=0

Disk Utility Couldn't Unmount Disk External Hard Drive

For the older Mac OS X like 10.6 or earlier, the opportunity lies in a SuperDrive and a bootable DVD, and this can also offer the same resolution. (3) Fixing With up vote 2 down vote favorite 1 I have a 500 GB external hard drive that I want to use with my new Mac (OS X Yosemite). Nov 27, 2012 4:37 AM Helpful (0) Reply options Link to this post by Joe Gramm, Joe Gramm Nov 27, 2012 4:43 AM in response to elliswicks Level 5 (6,344 points) Reply Vishal May 18, 2015 Hi Joel, I am going to help you resolve your issue.

I have rebooted a few times, and spent days running everything from TechTool Pro on it and it won't go. $ diskutil list disk2 /dev/disk2 #: TYPE NAME SIZE IDENTIFIER 0: You will need any OS X boot drive to complete this task, I used a Mavericks boot installer drive for this purpose but others should work too, whether they are installation Many thanks. Error 69888 Couldn't Unmount Disk So much easier and clearer than anything else I read.

In that case, you'll need to boot from a separate USB drive to fix the error. Disk Erase Failed With The Error Couldn't Unmount Disk Please reload CAPTCHA. × 4 = 16 Notify me of followup comments via e-mail. Can it be any usb?

Assuming you're on OSX, if you're still unable to unmount it, you can try forcing an unmount by issuing the follow command: sudo umount -f /Volumes/External_HD_Name Alternatively, try forcing an unmount

If yes, then go to OS X utilities and format the entire hard disk drive. Disk Erase Failed With The Error Couldn't Open Device Reply Ben says: September 17, 2016 at 2:50 pm Is there a way to work around needing a password? Junaid Rupani 878.158 görüntüleme 6:06 Disk erase failed couldn't unmount disk - Süre: 0:44. The one and only requirement are that Disk Utility must reside on the drive.

Disk Erase Failed With The Error Couldn't Unmount Disk

Nov 13, 2012 5:08 AM Helpful (1) Reply options Link to this post by elliswicks, elliswicks Nov 27, 2012 3:45 AM in response to elliswicks Level 1 (1 points) Nov 27, http://osxdaily.com/2013/06/14/resolve-a-couldnt-unmount-disk-error-in-disk-utility/ Took a lot of time to find it but was a flawless solution. Disk Utility Couldn't Unmount Disk External Hard Drive is the drive number. Partition Failed With The Error Couldn't Unmount Disk PLEASE HELP!!

asked 3 years ago viewed 95068 times active 2 months ago Upcoming Events It's the season to ask about recommendations - do it well, please. check my blog How much effort (and why) should consumers put into protecting their credit card numbers? Wife Works in LA. Reply Andrés says: March 31, 2016 at 6:00 am Thank you very much!!!!! Can't Unmount Disk Mac

Enter your admin password if prompted. bala 27th August 2015 at 10:48 pm · Reply Awesome. Error came up, can't unmount disk. this content How much effort (and why) should consumers put into protecting their credit card numbers?

Does gunlugger AP ammo affects all armor? Volume Erase Failed Couldn't Open Disk Keep it unmounted and then erase in Disk Utility. Regards.

The solution lies only in using a separate USB drive for fixing the error.

Launch up Terminal.app (through /Applications/Utilities or through a Spotlight search). Solution There are many solutions when the user faces these problems. I've saved this page for future -- really appreciate the clear instructions as well as screenshots. Force Unmount Mac Typically the "Couldn't Unmount Disk" error pops up when the currently boot drive is being modified, thus the easiest solution is to boot from another drive and run Disk Utility from

I couldn't repair or even erase/reformat the Time Machine partition through Disk Utility as it just didn't recognise it. With Boot Drive we mean that Operating system of a computer is burned (written) to a USB drive which makes it bootable. Would presence of MANPADS ground the entire airline industry? have a peek at these guys Worked for me this morning.