Actually the System deployment tools like Apple's Netinstall program or the DeployStudio falls flat, on accounts of this error. They are unable to get rid of or partition the commute.

Summary The consumer often experiences a issue, while managing some of the Macs, when they are usually not allowed to repair permissions or directory in Disk Electricity. The updated app now presents a streamlined appearance while retaining Your source for expert tips, special deals, commentary, reviews, and the latest tech news. One of the old Mac OS X utilities, Disk Utility, has received a makeover in macOS Sierra. I would normally reformat but I have a lot of stuff on the hard drive that I dont wont to lose.To restart Mac in Sierra: When you see the 'High Sierra could not be installed on your computer' message, instead of choose 'quit the installer and restart', click Apple menu > System Preferences > Startup Disk, select Sierra system and click Restart to start up your Mac in Sierra. Im asuming that to fix the hard drive it has to be able to unmount KAINARC.ĭoes anyone have any ideas of how I can fix this problem. I have tried other repair/recover programs but get the same message: 'Could not unmount disk KAINARC' So I have opened diskwarrior (unbelievably long time to start up and scan disks) in the hope of fixing the hard drive, but when i try to repair I get the error message 'unable to unmount KAINARC'. Repairing disk failed with error Could not unmount disk So I try to verify and repair the partition KAINARC but get this message: When i try to verify and repair the partition I get the message:Įrror: The underlying task reported failure on exitġ volume could not be repaired because of an error I go to disk utility and both partitions are visable, KAINARC is mounted but JUNGLEMAC is not. KAINARC now appears on my desktop, but the partition of JUNGLEMAC does not. I may have shut down the drive improperly to cause this situation. I have a Western Digital 500gb external hard drive, with 2 partitions, 'KAINARC' and 'JUNGLEMAC', connected to my Intelmac (Tiger 10.4.11 via my firewire, i have connected via usb but the problem is still the same).

Os x error could not unmount disk