Had a few irritating issues with a system (including the famous 'HAL.ddl bad or missing' fiasco etc)
Decided that a complete reinstall - with low level reformat was the best way forwards
The problem is that, in the BIOS, the system sees a 250GB Samsung drive - but booting from a Windows XP CD to do a complete reinstall only sees half that space
I have deleted the partitions etc - no joy