[ubuntu] Can't execute fsck

view full story

http://ubuntuforums.org – I have a Mythbuntu virtual machine running on Citrix Xenserver. I had a power outage recently which has wreaked havoc and I've had to restore the VM from a backup. Now I can't mount a couple of the disks. I've unmounted the disks but when I try to run fsck I get this error: $ sudo fsck /dev/xvdb1 fsck from util-linux 2.20.1 e2fsck 1.42 (29-Nov-2011) fsck.ext4: Operation not permitted while trying to open /dev/xvdb1 You must have r/w access to the filesystem or be root Well, I'm using sudo so surely I am root, so how come it's giving me this error? Is it something to do with it being a VM? An (Hardware)