For some reason I can no longer boot the latest image of the appliance in VMware player. When I boot up the CS50 appliance it suddenly stops and throws me an error:

kernel panic-not syncing: VFS: unable to mount root fs on unknown block(0,0)

I can boot up if I select the oldest image in grub, once there if I run df I see that the image is only occupying 33% of the available memory. I suppose that later images have saturated available space and won't permit the boot of the last image.

I'm currently running on: Linux appliance 3.13.0-65-generic #106-Ubuntu

When I try to run update50, sudo apt-get update or dpkg --get-selections | grep linux-image-, to see which images are installed It all comes back to the same error:

dpkg-query: error: parsing file 'var/lib/dpkg/status' near line 29599 package 'liblockfile1'

I've tried all I can think of and have searched through several threads to no avail. Any help will be greatly appreciated.

kind regards, Mauricio

1 Answer 1


If you saved all your work in Dropbox, just re-import the appliance if anything goes wrong.

  • tried everything else I could think of and nothing worked. Re-importing and updating worked like a charm. Commented Nov 5, 2015 at 14:06

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