Written by Here’s how :
When you try to umount the regular way, if a device is busy you’ll get the following :
dev:/# umount /dev/sda1
umount2: Device or resource busy
umount: /boot: device is busy
This can be solver very easy by entering this :
dev:/# umount -l /dev/sda1
To avoid misunderstandings:
The -l option does a “lazy” unmount, which means it keeps waiting until the device isn’t busy any longer before automatically unmounting it. It doesn’t “force” anything at all.
Wow! This helped.
The drive was unmounted instantaneously.
Great! Thanks, even more than 3 years later.
You’re welcome