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I want to check my partition for errors using Disk utility.

When I press the "Check Filesystem" button, it says that an error occurred ... device is busy. How can I ignore that error and carry on with the check?

I have Ubuntu 12.04 LTS.

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up vote 2 down vote accepted

The device/partition may be mounted or being used by some process. Also, please don't try to run a check on a mounted file-system; can result in severe data loss.

I'd suggest booting from a Live CD/USB (ensure that your drives are not mounted) and then trying to run ``fsck".

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Alright, thanks for the suggestion!!! – Nick Bailuc May 6 '12 at 4:32

You can also run fsck on your (root) partition file system by booting in recovery mode.

Select the entry for fsck in the recovery mode menu (example below) and press enter

recovery mode menu showing entry for 'fsck'

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