Hard Drive not detecting - 1 PC - 2 Boot Drives

[series12]

hi all,

i just formatted a drive lastnite and installed a fresh copy of XP on it.
then i noticed when i boot, my pc won't detect my D:\ drive...
(Doesn't detect in BOIS or windows)
(already tried the "Auto Detect in BIOS)

(I have 2 C:\ drives... both XP sp2.. but only 1 plugged in at a time)

basically i'm replacing one C:\ with a new on...

Old C:\ is a 80g
New C:\ is 160g
and D:\ is 260g

all seagate drives

the thing is, when i boot with my Old C:\, the D:\ is detected...
when i boot with my new c:\, its not detected...

Anyone have an idea why?

 

[MrLinux]

At a (complete) guess... Check the jumpers on the new drive and make sure they are set the same way as the old one.

If not, try giving us a hint (like PATA/SATA, drive makes, MoBo etc)...