250g hd only shows 128g

running win2k sp4 with an asus x series k8v-mx mother board. I have an 80g ide hd with windows installed and working fine. My second is a maxtor 250 ide that only shows up as having 128g on it. cmos shows it correctly. The system was only built last winter.
Can anyone advise on how to access the whole drive? Thanks, Lou

 

You probably need to enable 48 bit support for LBA

Details here:
http://support.microsoft.com/default.aspx?scid=kb;en-us;305098

 

thanks, I'll give that a try, Lou

 

I went to the registry as the microsoft artricle instructs and added the key value. But as I try to change the value data, it wont let me put in the x. It only accepts numbers. Can you advise, thanks, Lou

 

Well it worked even with the omition of the x. I am now formating the 250g drive. Thanks for the advise. Lou