Why is this happening? :-( In the BIOS, it doesn't even show its capacity in MB; just '300 GB'. The cylinders, head, etc shows a number at or just below '65535' (indicating to me like some maximum has been reached). My BIOS is Phoenix and my motherboard has an AMD Sempron in it.

Something I use called BootIT NG recorgnised this has its right capacity, but couldn't format the drive in NTFS format. This is why I'm thinking that it must be Windows stupid OS showing such a limitation.

BTW, I had this drive hooked up & running in an external enclosure and it showed the full capacoty in Windows. So I guess I have another problem restricted to internal (only IDE?) drives.

If anyone can help me out here, thanks very much. I don't want to format it in Windows or store anything on it until this problem gets fixed. as I don't want to lost any data...