Apple Info Site Map Hot News RSS Feeds Contact Us Copyright © Apple Inc. These are: (1) Fixing with Partition Manager If the OS X is denying you to format, erase and repair the Mac hard drive or a volume due to the Couldn’t Unmount Disk’ Following this, attempt to Erase/Partition the drive again in Disk Utility. Reply Andrés says: March 31, 2016 at 6:00 am Thank you very much!!!!! http://darrenmanning.com/disk-utility/disk-utility-disk-erase-failed-error-file-system-formatter-failed.html
Cannot allocate memory". acguevara 8.813 weergaven 2:22 Terminal: Mount & UnMount Disc Images - Duur: 4:13. Back up as many of your files as possible, reformat the disk, and restore your backed-up files' I unsure of my disk right now and need some solution asap. Chedens Alexis 2.760 weergaven 0:44 Partition failed with error | How to unlock Password Protected Hard Drive | HD busy encrypting - Duur: 4:05.
CompHelperKid 17.861 weergaven 6:50 How to Fix a Corrupt Mac Harddrive in 10.8 - Duur: 3:03. Piracy. Taal: Nederlands Contentlocatie: Nederland Beperkte modus: Uit Geschiedenis Help Laden... Why are Exp and 2 treated differently within Complex?
Hope this video helps!This could also go the the error: Disk Erase Failed With The Error and/or Invalid Request but usually googled through "disk utility disk erase failed with the error In my example below, the disk name is ‘Server'. Volgende Solution Disk Erase Failed with error Couldn't unmount disk mac - Duur: 3:28. Mac Disk Utility Disk Erase Failed Couldn't Unmount Disk These posts will be deleted. 6.
For this example, let's say it's /dev/disk2. sudo /usr/sbin/diskutil unmountDisk force /dev/disk2 Reply Ashley says: June 25, 2016 at 4:20 pm Came across this same problem after my MacBook Pro freezes after logging in and won't go to Reply Alan Siu says: April 18, 2016 at 1:40 pm That's an odd one.
I am running OS X Yosemite 10.10.5 Reply Miguel Starkey March 7, 2016 How should I access my external hard drive partition which is unmountd on OS X El Capitan
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 Disk Utility Erase El Capitan Volgende Solution Disk Erase Failed with error Couldn't unmount disk mac - Duur: 3:28. Follow the steps mentioned in above reply (to Mabaker) in order to create boot dvd. http://crystalmark.info/software/CrystalDiskInfo/index-e.html permalinkembedsavegive gold[–]SubparAsEver 0 points1 point2 points 9 months ago(0 children)Sounds permissions-related honestly.
Running OS X 10.9.5. this content Meer weergeven Laden... Are You Ready? Inloggen 129 224 Vind je dit geen leuke video? Disk Utility Volume Erase Failed
Your password is being accepted. I would suggest copy and paste. This helped me with my problem. http://darrenmanning.com/disk-utility/disk-utility-disk-erase-failed-error-could-not-unmount-disk.html Enter your admin password if prompted.
The last command will prompt for password. Disk Utility Erase Greyed Out Log in om dit toe te voegen aan de afspeellijst 'Later bekijken' Toevoegen aan Afspeellijsten laden... Include as many details as possible.
You should also see the name of the disk such as ‘Macintosh HD'. Required fields are marked * Prev Post Next Post Subscribe To The Blog For Free Updates Email EmailThis field is for validation purposes and should be left unchanged. noisymutespeaker 11.319 weergaven 1:46 Restore a Mac Hard Drive from a Time Machine Backup - Duur: 2:52. Disk Utility Erase Free Space Open disc utility find my external drive , that will not un mount or partition.
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) It is granted solely at the moderator's discretion.) Apple Trained: Current or former Apple employees who do not possess a higher level of certification. Reply Ava says: July 8, 2016 at 11:44 am i managed to install el capitan on the external drive and use terminal to force erase the disk. check over here With Boot Drive we mean that Operating system of a computer is burned (written) to a USB drive which makes it bootable.
Thanks so much for the quick and easy tip. Enter your admin password if prompted. armineprox 318.978 weergaven 4:33 How to Format External Hard Drive for Mac OSX - Duur: 4:13. But, whenever I try to repair my hard drive, it gives me an error message, “Couldn't unmount disk”.
the above command will initialize the master boot record. This was driving me crazy. share|improve this answer answered Jan 26 at 16:40 tim 1012 add a comment| up vote 0 down vote I found that this worked for a USB drive to erase and format You can change this preference below.
if you use the wrong one, you can screw up one of your other drives (which will be fine since you did a backup first thing, right?). Jan 21, 2014 3:16 PM in response to studio_ Level 3 (636 points) Jan 21, 2014 3:16 PM in response to studio_ The external HD is for my Time Machine BU. eric201501 39.551 weergaven 11:00 Disk erase failed couldn't unmount disk - Duur: 0:44. 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
After disabling Spotlight, Disk Utility performed its job and my corrupted drive was restored to use.(Spotlight is turned back on with: sudo mdutil -a -i on)This is from a 2012 discussion