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

HP 210 Mini Fedora 14 xfce

I have inserted my handy drive. However, when I right click and select unmount I get the following message:

An application is preventing the volume "New Volume" from being unmounted

So I try from the command line:

umount /dev/sdb1

And I get the following message:

umount: /media/New Volume: device is busy.

All I have done is copied some files to my handy drive. So I am not sure what process is keeping my handy drive busy.

Is there any command that I can use to see what process of anything else is using the handy drive?

Many thanks for any advice,

share|improve this question
up vote 1 down vote accepted

try `lsof | grep '/media/New Volume'

You will know what file is still open.

share|improve this answer

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.