http://www.dk.debian.org/Lists-Archives/debian-user-9806/msg01810.html

[Lara Garcia Hector Manuel <al304642@ing.ens.uabc.mx>]

I had the a problem a little same like that, but if you try to reinstall linux .... 
linux instalation can recognice the previus linux partition (if exist), you can reinstall (upgrade) and see what do..

ok... bye