#Erase process has failed mac install
Type this very carefully (sudo might not be necessary): sudo diskutil unmountDisk force /dev/disk2 I am willing to dual-boot my MacBook Pro (13-inch, Early 2011) macOS Sierra to install Ubuntu.(note: be EXTREMELY careful, ask you could wipe your computer if you do this wrong) Thankfully I ended up fixing it quickly (with a little googling). I was getting things like: ”could not modify partition map” and “couldn’t unmount disk.” Other things could be things like “couldn’t open device.” Erasing an External USB or Hard Drive that keeps failing in Disk Utility You get this error, and the details vary depending on the format type you try That might be because the disk is a Windows/Linux bootable formatted as FAT-32, which OSX cannot read.Īnd then when you try to erase in disk utility, the USB is greyed out and First Aid doesn’t work, you can’t repair it, and you can’t mount or unmount it. Choose the Gear icon and select the Disk Utility.
#Erase process has failed mac mac
For M1-based Mac: Restart your Mac and press and hold the Power key on your Mac until you see the Loading Startup Options. Select the Disk Utility after the macOS utility window opens.
Are you trying to erase a USB drive on your mac but getting this error as soon as you insert it? Restart your Mac and click and hold the Command + R keys.
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