Mac Usb Unable To Unmount Volume For Repair
OS X Mavericks:: Unable To Repair Or Unmount Disk To Reformat Jun 20, 2014 I have a Macbook pro 17' (2011) running Mavericks with a Crucial 960Gb SSD and a 750Gb WDC in the optical bay. My ssd is divided into 710 Gb to OS X and 182 Gb to Windows 7 Bootcamp. All was well until the other day when the OS X partition failed to boot. I got the grey screen and the very slow progress bar which after 15 minutes powered the machine off. The Bootcamp partion continues to work without issues. I booted from an install disk and ran disk utility.
The OS X partition appears greyed out on the left panel. I attempt a repair disk and after a 15 minute delay it says it is unable to repair the last action being 'updating boot support partitions for the volume as required'. Its all backed up regularly on time machine but when I boot an install usb and attempt to restore from time machine, the OSX disk does not appear as an option. I go back into disk utility and attemp to erase/repartition the disk to start a new install but it refuses to unmount. I appear to be running out of options, Similar Messages: • • • • • • • • • • • • • • • • • • • • • • • • • • • • • ADVERTISEMENT Jul 17, 2009 So so annoyed right now.
I made an external USB High Sierra boot disk. Started Mac using this drive (Press Option key after sound when starting up and select the High Sierra boot disk). Opened Terminal and unmounted using - diskutil unmountDisk force /dev/disk2 (use diskutil list to find your drive).
Today my 12' G4 powerbook started to become slow, lots of spinning wheel, delayed menus etc. I checked file permissions, rebooted and it just kept on getting slower.
Macintosh Usb Unable To Unmount Volume For Repair
Eventually it wouldn't get past the white apple screen. I booted off the Tiger DVD and ran disk utility to fix and repair permissions again. It wouldn't let me repair the disk as I kept getting this error: 'Repair volume failed with error could not unmount disk' I had to reboot again, and eventually my hard disk no longer appears in Disk Utility. I tried to boot into safe mode and get this: 'I0ATAController device blocking bus I0ATAController device blocking bus I0ATAController device blocking bus I0ATAController device blocking bus I0ATAController device blocking bus' So now I pretty much can't do anything with it. Failed Hard Drive? Aug 29, 2014 I wanted to do a clean install and repartition my iMac running 10.8.