Here I recount my experience upgrading the original factory hard drive of the XBox to a WD Caviar Blue 500 GB Desktop (3.5") drive (WD5000AAKB).
Step 1: Parts / Tools
- A Torx screwdriver
- A Molex hard drive power cable "Y" splitter
- A new hard drive for installation
- A modded XBox
- Chimp XBox Hard Drive cloning software (available at "usual places")
A list of compatible hard drives can be found at the Xbox Hard Drive Compatibility Chart.
Details on soft-modding the Xbox can be found in my previous instructable, Original XBOX Softmodding.