pentium4 2.4ghz
abit sa7 motherboard 533mhz bus
disks: 40gb(ok), maxtor.160Gb(shown as 128Gb), west.dig.200Gb(shown as 128Gb)

the sizes of all the above disks are displayed correctly in bios, but winxp (disk management) and partition magic only see 128Gb space on each of the large disks. the 160Gb disk has been low level formatted and the 200Gb disk is factory fresh. any suggestions?

Hello,

Have you fitted these drives yourself? You might want to look into the "jumper settings" for them, which should have a legend shown on the actual drives, or possibly with any literature that came with them. Typically speaking, different settings will result in different capacities being reported.

These links might offer help for your specific drives... [Western Digital] [Maxtor]

[EDIT] Actually, since the BIOS reports full capacities, the jumper settings might not be the issue. Someone might however have a better idea

Hope this helps,
M_M

Hi Janimal , sounds like its time for winupdate , you don't have sp1 or sp2 installed i think?

After updating have an other look in youre disk management.

i'm running xpsp2, which was installed straight after installing xp. the jumper setting are fine. if they weren't, the drive would be invisible, init? i ran the maxtor big drive enabler, which is supposed to turn on 48-bit LBA, and updated my bios. according to the abit site my board supports 160Gb as standard and over 160Gb with bios update. i'm still hitting a ceiling of 128Gb or 137Gb depending on where i look at the disk sizes in windows.

Hmm , do you see any "unpartitioned space" in youre disk management?

no. the sizes i've quoted are the total disk sizes shown, not partition sizes.