I am having a simular problem. I have 2 hard drives. A 15GB for my Windows,
and a 160 GB that has been partitioned into 5 smaller drives. Recently I
tried to open my F drive, and it told my that it was not reconized and it
prompted me to format it.
I have 21.7 GB free space out of 30 GB. I seen this post and did what you
said. It showed my 2 hard drives, but not the partitioned drives.