Hard Drive Formatting and Unmounting Errors
- by Lucas Carther
I'm trying to format a hard drive using Ubuntu 11.10. Every time that I attempt to format it from the Disk Utility, I get the error saying the device is busy, and under details it says:
/dev/sda1 is mounted
Then when I try to unmount it from the disk utility, it shows that the operation has failed and says:
Error unmounting: umount exited with exit code 1: helper failed with:
umount: only root can unmount UUID=70D6-1701 from /boot/efi