Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

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?

share|improve this question
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:

(enter your root password)
umount /mnt/wherever
share|improve this answer
Alternatively you can also use sudo. – BinaryMisfit 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

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.