- #Erase process has failed mac couldn t unmount disk how to
- #Erase process has failed mac couldn t unmount disk mac os
- #Erase process has failed mac couldn t unmount disk password
Launch Disk Utility and select your Mac hard drive from the left sidebar.
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Problem solved? Share your joy with others. Nevertheless, If Disk Utility still can't erase the Mac hard drive, please repair it with First Aid. But, if you did choose the volume and still failed, you can click View > Show All Devices to display all the drives, then erase the drive itself to see if it succeeds. We recommend you erase the volume but not the entire disk to avoid the "Secure Disk Erase Failed - Couldn't Unmount Disk" error. Then keep the Scheme as GUID Partition Map.
#Erase process has failed mac couldn t unmount disk mac os
#Erase process has failed mac couldn t unmount disk password
Select a language, then your account, and enter the password for it.On an M1 Mac: Turn off your Mac, and press the power button until you see the Options Menu. On an Intel-based Mac: Restart your Mac, then hold Command + R keys until the Apple logo shows up. That's because you can't erase the drive you are currently running from, and you need to boot into Mac Recovery mode to format the Mac startup disk. If you are trying to format the Mac hard drive or its volumes - Macintosh HD and Macintosh HD - Data, you will inevitably see the Erase button grayed out in Disk Utility.
#Erase process has failed mac couldn t unmount disk how to
How to fix the Erase button grayed out in Mac Disk Utility? How to fix the 'Erase process has failed' error on Mac? What to do when Disk Utility can't erase Macintosh HD? Here, we will discuss solutions to solve these Disk Utility erase errors so you can format the disk. You may fail to format your Mac hard drive or an external hard drive when the erase button is grayed out on Mac Disk Utility or when you receive the "Erase process has failed" error message. Let me know if this was helpful in the comments.What to do when Disk Utility won't let you erase sd card s, USB drives, and other hard drives on Mac?
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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
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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. Are you trying to erase a USB drive on your mac but getting this error as soon as you insert it?