WinXP doesn't find HD, Help!

[Shade]

I've been running win2k for a long time, and finally decided to upgrade to XP, everything works fine, except one of my harddisks is missing.
When I look into BIOS it finds all 3 drives without a problem, but then in windows one is just gone???

I have 3 HD's 2 160Gb drives which are connected with thin red cables, and not the usual wide cables. I have the option to run RAID with these two drives, but I'm not. I think they're SATA drives, at least it says SATA0 and SATA1 on the motherboard where they're connected. I have windows installed on one of these drives, and it's the other one that's missing.

The other drive contains all my work files, so I'm in big trouble. It doesn't show up in the device manager or anywhere, and I'm just lost.

I need help bad!

[Bobert]

Do you know the chipset of the motherboard? Some motherboard allow 2 SATA devices and another 2 with an add in controller, which may need drivers. Also are all the drives formatted in windows filesystems? IE: NTFS, FAT32...

[Shade]

I don't know what the chipset is called, the motherboard is a First International Computer board called P4-865PE Series/VL13PE

All drives use NTFS, and they all worked under windows 2000 Pro

It's just the one with windows installed, and the missing one which at SATA drives, the 3rd one is a normal IDE or something.

[Bobert]

Have you checked inside to make sure that the drive is in fact connected to power and to the SATA cable? Also does your bios recognise it and not windows? And finally can you see it if you go to: run -> type in "compmgmt.msc" -> click storage -> then click disk management?

[Shade]

Yes it's connected and spinning and everything. BIOS finds it correctly, but windows doesn't. Not under disk management, my computer or device manager.

I'm lost!

[Samuel]

Change the drive letters around of the other drives. It might pop up for ya.

You'll have to reboot a couple times to confirm if this will work.

[Bobert]

May work, what are your drive letters now? (All, optical, hard drives, etc...)