Sign in to make your opinion count. If you have used our method above to create a bootable installer, choose ‘Disk Utility' from the available menu. His OS X and iOS tips have been some of the most popular posts on the blog. Chedens Alexis 4,091 views 0:44 Secret of "dead" external HARD DRIVES! navigate to this website
King May 23, 2016 I am trying to restore my Mac OS X El Capitan from an external drive to my Mac HD. Any ideas? Everytime I try and format, it tells me that the drive cannot be unmounted.
This will allow you to fix the problem, regardless of the cause, by one of two means, the first is a sure-thing to fix the issue, while the other only works I even set a one-on-one session and we could not figure it out. Hope this helps. Volume Erase Failed Couldn't Open Disk Thanks a lot Kelvin 30th August 2015 at 3:21 am · Reply I got same error:-69888.
I advise you download & install Stellar Volume Repair tool and rebuild the drive corrupt directory structure. Partition Failed With The Error Couldn't Unmount Disk Use Disk Utility<
Sign in to add this video to a playlist. Force Unmount Mac 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 Took about 5-10 minutes. Parents disagree on type of music for toddler's listening Who is this six-armed blonde female character?
Reply Vishal May 19, 2015 @Eugene. Sign in Share More Report Need to report the video? Can't Unmount Disk Mac What is the day to day life like as a father? Disk Utility Couldn't Unmount Disk External Hard Drive So now i have two broken internal hard drives.
This worked great. useful reference Locate your drive and right click on it. What happens if you try this? Disk Utility then successfully erased and reformatted the external drive!Many thanks for the clues that led me to this solution! Error 69888 Couldn't Unmount Disk
If you can't remember it, reset it (you can do so from recovery mode): https://discussions.apple.com/docs/DOC-4101 Reply Jerry says: October 5, 2016 at 5:25 pm thx Reply Nate says: October 25, 2016 Worked like a charm for me to reformat an external drive. 100x easier than the other ways I read to solve the unmount issue, like boot disks, etc. OK, we've tried to be nice, but is the disk STILL not letting you work with it? http://gsbook.org/unmount-disk/disk-utility-erase-error-could-not-unmount-disk.php Published on Aug 11, 2015External Hard Drive, Usb drive, Flash drive, Yosemite OS X , El Capitan OS X, Macbook pro, iMac, macbook air, macbook, macbook retina display, macbook retina display
Explain it to me like I'm a physics grad: Greenhouse Effect Word for fake religious people Why do Latin nouns (like cena, -ae) include two forms? Disk Erase Failed With The Error Couldn't Open Device However, this is not applicable for the modification of the boot disk with the help of partitions or formatting. Couldn't unmount disk, then you may have to force an unmount through the terminal.
Now You Mac will Boot from the DVD. 5) Stellar Partition Manager is mounted on the DVD. acguevara 11,277 views 2:22 How to reset your MacBook Pro to Factory Settings without Installation Discs - Duration: 3:28. 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. At Least One Volume Could Not Be Unmounted Can it be any usb?
Home Mac OS X iPhone iPad Tips & Tricks Jailbreak News iOS Resolve a "Couldn't Unmount Disk" Error in Disk Utility Jun 14, 2013 - 15 Comments Disk Utility usually works Sign in 3 8 Don't like this video? The last command will prompt for password. get redirected here The above steps did the trick and everything was working again as expected.
ends in 2 days Linked 3 Can't erase unmountable external HD Related 0Partition issues after deleting Core Storage Logical Volume Group. Working... Then paste in the command: diskutil list to list out the different disks. Please let me know if this resolves your issue.