"error unmounting /dev/sda1:target is busy" when I try to resize a partition [duplicate]
Solution 1:
- The Key next to the partition in gparted indicates that the drive is mounted (in use). So, you need to "unmount" them to be resized.
- You cannot unmount root partition if you are booting from it.
- It is usually better to do partition changes from a Live media/pendrive
Hope it helps.