Help needed after Wubi install

Question

The installation went well as shown on http://www.ubuntu.com/download/help/install-ubuntu-with-windows - but when booted through 'ubuntu' option, a screen shows a grub> prompt. What to do next??

Answer 1

^{This was answered in a comment (this answer might not be sufficient for everyone, but it will likely solve the problem for many people, and provide a source of diagnostic information for even more).}

Run chkdsk /r and then check if the \ubuntu\disks\root.disk is there - or else refer to this: ubuntu-with-wubi.blogspot.ca/2011/08/missing-rootdisk.html

– bcbc Nov 7 '12 at 16:38