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Format Flash Drive On Mac Could Not Unmount Disk

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I tried the other workaround; hdiutil detach, and i get an error saying "Resource busy" please advise Reply Alan Siu says: October 25, 2016 at 8:07 am This should help you Keep it unmounted and then erase in Disk Utility. He has successfully recovered number of Mac hard drives, failed drives and even unmounted drives. Through register software, you can run multiple recover modes such as Deleted File recovery, Formatted Drive recovery, Raw Recovery etc. http://jessriegel.com/unmount-disk/format-external-hard-drive-mac-error-could-not-unmount-disk.html

King May 23, 2016 I am trying to restore my Mac OS X El Capitan from an external drive to my Mac HD. Hakkında Basın Telif hakkı İçerik Oluşturucular Reklam Verme Geliştiriciler +YouTube Şartlar Gizlilik Politika ve Güvenlik Geri bildirim gönder Yeni özellikleri deneyin Yükleniyor... Çalışıyor... Newer Than: Search this thread only Search this forum only Display results as threads More... Ignatius College Prep Tech Blog - trademarkable on How to read from and write to .plist files using PythonAlan Siu on Fix for disk erase failed couldn't unmount diskPages About this http://forums.macrumors.com/threads/disk-utility-error-disk-could-not-unmount.887756/

Can't Unmount Disk Mac

Join Date Sep 2005 Beans 195 DistroUbuntu 8.04 Hardy Heron Mac unable to unmount USB stick Any of you good Mac users able to help me, I have a USB stick Firstly you need to create a boot media using Stellar Partition Manager software. u_u Reply Alan Siu says: September 17, 2016 at 4:16 pm You may be able to rectify this issue by booting into single user mode, and then (after the fsck scan) 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

Please let me know how should I proceed. Soon, the next version will be doing all partitioning tasks on boot camp. [Update: June 2015: Stellar Partition Manager supports BootCamp partition] Reply Timothy May 21, 2015 My external worked perfectly. At Least One Volume Could Not Be Unmounted Once you are satisfied with the recovery performance of the software, you can purchase the software through its buy page.

So something on the Mac won't let it go. Disk Utility Couldn't Unmount Disk External Hard Drive Open disc utility find my external drive , that will not un mount or partition. Defendant"? http://osxdaily.com/2013/06/14/resolve-a-couldnt-unmount-disk-error-in-disk-utility/ 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.

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 Force Unmount Mac Join Date Sep 2005 Beans 195 DistroUbuntu 8.04 Hardy Heron Re: Mac unable to unmount USB stick Thanks for trying to help, both of you. The USB stick is FAT32 formatted SanDisk cruzer and ejects fine from xubuntu/xp/2000 just not the Mac. Reply John says: August 10, 2016 at 1:13 am You can force unmount a drive by running the following Terminal command: diskutil unmountDisk force /Volumes/VOLUMENAME Replace VOLUMENAME with the name of

Disk Utility Couldn't Unmount Disk External Hard Drive

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This is a good example of why it's very valuable to have a bootable USB thumb drive set up with whatever version of OS X is running on your Macs, because Can't Unmount Disk Mac Reply Scott says: February 12, 2016 at 1:43 pm Great tip. Couldn't Unmount Disk Mac First, Download the OS X firmware from the official App Store 2.

The symptoms (unable to unmount) and the solution (force unmount) are probably the same though. –klanomath Mar 25 '15 at 17:02 no most likely an early fusion drive –oemb1905 http://jessriegel.com/unmount-disk/formatting-hard-drive-could-not-unmount-disk.html Reply joe says: May 4, 2016 at 5:58 am Thank you! Right now i have the macbook booted on the external on el capitan and I'm going to go through the whole process over again for this computer. HELP!0Disk Utility Weirdness: Macintosh HD Cannot Be Repaired But Then Has No Problems?0Hard disk doesn't show on boot after erasing with Disk Utility1OS X can't unmount disk0Messed up 1TB Fusion Drive Error 69888 Couldn't Unmount Disk

I did Google your error, and came across this workaround. Would your software resolve this issue? Ask Different works best with JavaScript enabled current community blog chat Ask Different Ask Different Meta your communities Sign up or log in to customize your list. Check This Out share Share on Twitter Share on Facebook Email Link Like + Quote Reply lagopede, Aug 14, 2013 lagopede macrumors newbie Joined: Oct 20, 2011 #6 This fixed the problem for me

Now with the help of the Mouse pointer, drag the sidebar to resize your Mac HD 2 partition. Partition Failed With The Error Couldn't Unmount Disk share|improve this answer answered May 6 '13 at 3:56 George Spiceland 28519 add a comment| up vote 3 down vote You can use lsof to list open files: sudo lsof|grep /Volumes/Volume\ Worked for me this morning.

I just force-deleted it and the problem’s gone, now the disk ejects normally.

Reply Alan Siu says: January 26, 2016 at 4:49 pm Try booting into recovery mode (holding down Cmd-R during bootup) and then erasing it from there. Where should a galactic capital be? He'd be quite wrong, of course, which is why one doesn't ask such people for advice. Volume Erase Failed Couldn't Open Disk Join Date Feb 2007 Location West Hills CA Beans 10,050 DistroUbuntu 14.04 Trusty Tahr Re: Mac unable to unmount USB stick If you have finder open with a directory on the

All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.  Apple Support Communities More ways to shop: Visit an Apple It if truth be told was once a enjoyment account it. The drive won't allow me to delete anything off of it. this contact form Follow his post to know more about data recovery and Mac backups.

Geri al Kapat Bu video kullanılamıyor. İzleme SırasıSıraİzleme SırasıSıra Tümünü kaldırBağlantıyı kes Bir sonraki video başlamak üzeredurdur Yükleniyor... İzleme Sırası Sıra __count__/__total__ Disk Erase Failed with the error: Couldn't unmount disk Of the computer's HD, obviously... *Disk Utility>Select Drive>Repair Permissions iBook G4: 1.33 Ghz, 1Gb RAM, 40 Gb HD Mac OS X Leopard v.10.5.2 PC: Pentium IV 2.0 Ghz, 768Mb RAM, 40 Why was the plane going to Dulles? Reply Lauri says: August 17, 2016 at 12:56 pm I had hoped…. 🙁 Didn't work for me - I've been trying anything and everything to get my external to show back

Reply chris says: December 8, 2016 at 12:13 pm it still fails disc erase in utility, this drive is almost brand new, it's hardly been used, is there anything else I Thanks Reply John April 7, 2016 MacBook Pro 2011 2.2 GHz Intel Core i7 8GB 1600 MHz DDR3 OSX 10.9.5 I replaced my optical drive with an HDD Caddy Reply TE says: March 26, 2016 at 9:59 am Couldn't get around this problem until I found your solution… Used diskmaker x to make an el capital boot disk then followed How to replace not found reference "??" in an another constant e.g "REF"?

Ubuntu Logo, Ubuntu and Canonical Canonical Ltd. I'm trying to reformat a thumb drive (4gb). Same goes when I try to erase the disk. Reply Monish d kothari says: September 13, 2015 at 6:17 am For people unable to boot from other disk ( elaborated method) : * Download the OS X firmware form App

Most Liked Posts Bennieboy©, Apr 2, 2010 Bennieboy© macrumors 65816 Joined: Jan 15, 2009 Location: england #1 Hey guys, i'm trying to format a spare external, it's currently formatted to ms-dos What happens if you try this? Computers shouldn't cost the earth - lower your power consumption, buy sustainably - Adv Reply March 29th, 2008 #2 Alfa989 View Profile View Forum Posts Private Message Quad Shot of Open the command line and type the following: diskutil list (press enter to execute the command) You will see something like: 0: GUID_partition_scheme *8.0 GB disk1 Find your disk by size

It is failing every time. http://technology.siprep.org/fix-for-disk-erase-failed-couldnt-unmount-disk/ Reply Bobby says: October 9, 2015 at 5:17 pm Excellent post!