Re: New Harddrive recognized by BIOS but not Windows? (NWS)
 

Well there's a pretty critical peice of information you left out. You are going to need to re-format the drive. All data will br lost but it should work fine then.

Re: New Harddrive recognized by BIOS but not Windows? (NWS)
 

If it was used in an xbox it may be locked. It's locked in the drives firmware, unless the seller unlocked it before the sale. It's a paper weight unless you have access to the original xbox it was in if it is still locked.

If it's not locked, make sure the main drive is on the end connector of the IDE cable and is set to Primary, or master. If the second drive is on the same cable, it should be set to slave. If the second drive is on it;s own cable, make sure it's on the last connector, and set to primary. The cd-rom that shares either cable should be set to slave. Also check to see if the main drive is set to master single, or master.

use the dos prompt and run:

FDISK /MBR (driveletter):

to rebuild the mbr.

Re: New Harddrive recognized by BIOS but not Windows? (NWS)
 

Another update

The Harddrive was ONLY used in an Xbox, never in a PC.

Aparantly when you put a HD in an Xbox you have to do some trickery to it for it to work. I have to undo that now... Looks like Ive got more reading to do.

Re: New Harddrive recognized by BIOS but not Windows? (NWS)
 

Try PartitionMagic? (free on bittorrent)

It's some pretty low level software that I've never had a problem recognizing a drive with, and you can completely reformat to whatever type of format you want.

Re: New Harddrive recognized by BIOS but not Windows? (NWS)
 

Ran Hirens BootCD.
Tried to use "killdisk", partition magic and some other partitioning software I downloaded. They will all show the drive but none can erase it. They all give me "write errors". :(

If anyone knows some other fix besides loading it into a modded Xbox to "unlock" it let me know.

Re: New Harddrive recognized by BIOS but not Windows? (NWS)
 

The drive may physically be dead. You may have to accept that if nothing else works.