Windows XP not recognising full capacity of 160 GB hard disk


Active Member
OK, I'm building my first computer. The Bios recognises the full capacity of my S-ATA hard disk (160 GB). However, when I install Windows XP Professional, it only recognises the disk as 130 GB.

Is that a limitation with Windows XP, or is there something I should do? I thought I might need a Bios upgrade but the Bios lists the disk as 160 GB, so I don't think it's anything to do with Bios.

BTW, in case the info helps in the investigation:
Motherboard is Asus P4C800-E Deluxe
Hard disk is Hitachi S-ATA Deskstar 160 GB.


Dr. X


Yes, it's the Bios of your motherboard that's out-of-date.

I recently had the flash the BIOS of my motherboard for it to recognise the full capacity of my new 250Gb disk.

Something to do not supporting 48-bit disk addresses in the FAT table.

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