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Could Not Unmount Disk Mac Error

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The version of the OS X does not matter, by at least must be 10.7, 10.8 and 10.9. I have stupidity emptied my Trash. The symptom was that the Mac OS X Disk Utility could see the drive but trying to format it would hang indefinitely at "Unmounting Drive".I formatted the disk with the built Ekle Bu videoyu daha sonra tekrar izlemek mi istiyorsunuz? have a peek here

macos hard-drive disk-utility partition share|improve this question edited Oct 8 '15 at 21:36 asked Oct 8 '15 at 21:22 Peter S 10817 Just to be clear - you don't Providing links can also help the OP, and others, find additional info for themselves. We'll cover both with a bit of explanation. Therefore, a bootable thumb drive was a good option. More Bonuses

Disk Utility Couldn't Unmount Disk External Hard Drive

Oturum aç Paylaş Daha fazla Bildir Videoyu bildirmeniz mi gerekiyor? Through register software, you can run multiple recover modes such as Deleted File recovery, Formatted Drive recovery, Raw Recovery etc. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Uygunsuz içeriği bildirmek için oturum açın.

Seems your hard drive is corrupt and beyond the repair of Disk Utility. Regex with sed command to parse json text Why did Sansa refuse to leave with Sandor Cleagane (Hound) during the Battle of Blackwater? Apple - please make your GUI stronger. –oemb1905 Oct 4 '15 at 7:29 Didn't have a volume to unmount; unmounted the disk device instead (with N being 3 in Error 69888 Couldn't Unmount Disk Click to visit Stellar Partition Manager key registration page Reply Iggy December 2, 2015 I have an EXFAT partition on my 1TB usb hard drive however Stellar Partition Manager

Reply Jason says: November 5, 2015 at 8:50 am I tried this method, but now it says "Forced unmount of disk2 failed: at least one volume could not be unmounted" Please Is the effect of dollar sign the same as textit? Amsys will not compensate you in any way whatsoever if you ever happen to suffer a loss/inconvenience/damage because of/while making use of information in this blog. http://osxdaily.com/2013/06/14/resolve-a-couldnt-unmount-disk-error-in-disk-utility/ While you are free to re-setup the drive you can create any new partitions you want (if you want any.) Sep 23, 2011 1:44 PM Helpful (1) Reply options Link to

Reply Alan Siu says: December 5, 2016 at 11:22 am If it successfully unmounts the volumes, the volumes are unmounted and thus should not show up in Finder. Cannot Unmount Disk Mac All rights reserved. Reply uzz says: July 21, 2016 at 1:05 pm You don't need any boot drive nor recovery partition utility to fix this error. First, figure out your password.

Volume Erase Failed Couldn't Unmount Disk

The original link is in "http://archive.macfixitforums.com/ubbthreads.php/posts/346000" Eduardo Ferraz 24th November 2015 at 3:12 pm · Reply Thanks a lot!

Yükleniyor... Disk Utility Couldn't Unmount Disk External Hard Drive Reboot the Mac holding down the "Option" key and choose the Recovery partition Select "Disk Utility" from the boot menu Go to "First Aid" to verify and repair the disk, or Partition Failed With The Error Couldn't Unmount Disk Spent hours trying other solutions, but this worked straight away! –user128386 May 18 '15 at 23:30 add a comment| up vote -1 down vote Try to use umount -f /Volumes// share|improve

Cox 356.526 görüntüleme 5:16 Reinstall MacBook Pro OS X version ≤ 10.6.8, restore macbook pro without disc - Süre: 3:44. navigate here Even the Network deployment tools like Apple's Netinstall service or the DeployStudio fails, on account of this error. JonoKimonoDoesTech 18.007 görüntüleme 2:57 Format A Drive In OSX Terminal - Süre: 2:30. Reply Jimmy Kiddo says: August 13, 2016 at 10:05 am Man, you are a genius,,,worked like a charm Reply Brock says: September 15, 2016 at 7:54 am This worked for me Can't Unmount Disk Mac

Otherwise use format and choose HFS+ plug the hard drive into your Mac again and it should format no problem. In a moment of "what the heck, try this," while in Disk Recovery mode, I ran Fix Disk Permissions, then, voila! Reply Jimmy Kiddo says: August 13, 2016 at 10:05 am Man, you are a genius,,,worked like a charm Reply Brock says: September 15, 2016 at 7:54 am This worked for me http://strobelfilms.com/unmount-disk/disk-erase-failed-error-could-not-unmount-disk-lion.html in any way.

Even after I tried your final option, I got this message: >Error: -69888: Couldn’t unmount disk Same here. Volume Erase Failed Couldn't Open Disk Reply Scott says: February 12, 2016 at 1:43 pm Great tip. Please let me know how should I proceed.

Chedens Alexis 4.091 görüntüleme 0:44 Mac OS X 10 11 El Capitan : Use First Aid Repair Errors - Süre: 2:57.

Thank you ! -Bobby Reply Lissett says: October 11, 2015 at 10:19 am Worked for me as well! What happens if you try this? The following steps can do the fixing: The USB boot drive is attached to the Mac, and the system is rebooted The OPTION key is held during the booting and then Disk Erase Failed With The Error Couldn't Open Device Disk Utility gives you options to secure delete the partitions and hard drives.

How does ssh run a command? Running OS X 10.9.5. I've never seen that. http://strobelfilms.com/unmount-disk/disk-utility-partition-error-could-not-unmount-disk.html All failed.

Then use activity monitor to force the process to quite and then redo the partitioning. Went back to disk utilities, erased it (this time it did not complain at all), re-installed OS. This feature has been tested using OS X v10.9.2 which was the latest Mac OS release at the time of writing. Ignatius College Prep Tech Blog Proudly powered by WordPress Twitter Facebook LinkedIn YouTube Book a Repair Book a Course 020 8660 9999 - [email protected] Home Xmas 2016 Repairs iPhone repairs Mac

Such boot drives are easy to create on your own, here are instructions for making boot disks for OS X 10.9, OS X 10.8, and OS X 10.7. to go up a level which moved me outside of the disk I was trying to unmount. –tylerlindell Nov 25 at 3:42 add a comment| Your Answer draft saved draft MacBook Pro, Mac OS X (10.6.7) Posted on Sep 23, 2011 12:51 PM Reply I have this question too Q: Disk Utility cannot unmount disk Hide Question All replies Helpful answers Zognoh 806.136 görüntüleme 3:28 How to Format An External Hard Drive for Mac - Süre: 5:16.

Reply Del Rey says: December 3, 2016 at 6:45 pm Worked for me reformatting a Seagate Backup plus to use with OS 10.6.8.