if for some reason there's no disk, make it so the other options to find test/fail as needed.  Of course it's assuming the disk already set prior, so most likely will fail anyway.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@2583 71f96598-fa45-0410-b640-bcd6f8691b32
Merge svn with dev-branch