unmount hard drive

I have a 2013 Mac Pro. This machine is used exclusively in my recording studio. OS 10.14.6. Sometimes when I try to shut the computer down it sticks on the black screen with spinning gray wheel and will never shutdown, even if left over night. I have to hold the power button to force a shutdown...

A number of unfortunate suckers have reported issues with M1 iMacs automatically unmounting external (USB) drives. I'm one of those. Bought M1 iMac, updated to Monterey 12.0.something before fully setting up the machine, and had my externals (three USB drives, four partitions) randomly...

Hi My MacBook Pro 2018 (I9 15") unmount my external USB harddisk but in mount it again within 30 sec. I get the error message when it's unmounts. I tried difference setup: thru my usb-c hub (satechi), direct into computer, another usb cable and last another harddisk ( WD Studio and LaCie...

Hi folks, My girlfriend is working on selling her 2010 MBP. She had an issue where it would randomly restart, so we figured we'd try to format it and then go from there. I followed Apple's instructions here. In that process, the disk was unmounted, and, with it being an older MBP, there's not...

hey folks, talked with support yesterday for a few hours. Problem is, I can not get my internal drive to unmount. Upon start up, it keeps getting hung up when it shows progress bar and apple logo....itll get part way loading, then restarts.....fortunatly, I had a back up on time machine...