How do I unmount a drive “not mounted by HAL”?

Question

I'm running CentOS in a virtual machine (VMware) and booting from an iso, is it possible to unmount the 'drive' I booted from?

I get something along the lines of cannot unmount because it was not mounted by HAL...

Is it possible to force it to unmount?

Mike McQuaid · Answer 1 · 2009-07-31 08:59:00Z

up vote 1 down vote accepted

Not mounted by HAL means you can't unmount it as a normal user so you need to use your root account to do so.

So run:

su
(enter your root password)
umount /mnt/wherever

answered Jul 31 '09 at 8:59

	Alternatively you can also use sudo. – Diago Jul 31 '09 at 10:03
	Sure, but sudo is less likely to be the default on CentOS. – Mike McQuaid Jul 31 '09 at 10:24

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