I've had a Windows XP and Ubuntu setup on my netbook (Samsung N130) for some time, but I was running low of hard disk space so opted to format the parition with Ubuntu installed (i know, i know - but for this netbook I prefer XP).
This decision has rendered my system unbootable, on a restart I get the following:
error: unknown filesystem.
I attempted to fix my MBR using a bootable flash drive with XP installed as detailed in this guide http://helpdeskgeek.com/how-to/fix-mbr-xp-vista/.
The operation completed successfully, though I receive the same problem on reboot, perhaps I did something wrong? Should it have not been on the C:\WINDOWS> command line, the parition I removed was originally on D:. I'm completed lost!