All I can say is: GOOD LUCK!
I recently tried to transplant an old XP hard drive into my main computer because the computer it was in had some sorta problem with it's power supply. But that's not the problem.
I'm having a horrible time trying to get the drive to work. I tried 3 ways of booting it:
Safe Mode: Everything works except for sound which, since I'm using it for gaming, defeats the purpose.
Safe Mode w/ Networking: I get up to the login screen, try to login, and receive an error message telling me that I need to verify/authorize/something the machine (sorta like the iTunes usable-on-5-computers rule I guess). I have to start up out of safe mode to do so, which is rather impossible because:
Normal Boot: The splash screen shows for about 10 seconds before I get hit in the face with a bluescreen. Among other things, it suggests starting in safe mode (tried it), updating drivers (done it), and shutting off hardware that may be causing the problem (didn't help). It also gives me one helluva error code:
STOP: 0x0000007E (0xC0000005, 0xBA228750, 0xBA4C3128)
I have one good theory. I'm running a 64-bit rig and the Windows XP on the drive is 32-bit. Are 64-bit processors only reverse-compatible in safe mode? *shrug*