Mac Disk Utility First Aid


#1

I’m trying to use First Aid to repair a G-Raid 6TB external hard drive that is acting funny, but I consistently get the message “First Aid could not unmount the volume for repair.”

Anyone know what’s going on? Or how to fix it?


#2

The MAC First Aid is unfortunately quite weak and prone to not being able to function very well. In most cases the best way to clean off a drive that has corruption on it is to transfer the needed data off elsewhere and then Erase the drive in the Disk Utility.


#3

Unfortunately I get a “file cannot be copied” error message when I try to copy the contents of the drive. That’s why I was using First Aid.

Anything I can do to clean up the disk before I transfer the data?


#4

Only another power repair or recovery tool. You can rebuild a drive with Disk Warrior however it isn’t a free solution. Or use Data recovery software such as Data Rescue.