If I replace my MBP hard drive...

[Boesky]

What do I do with the hard drive that came with my MacBook Pro?

 

[kai920]

1. Keep it, and put it back in your MBP if you need to send it in for repairs (as a precaution.. some people recommend this)
2. Sell it
3. Keep it and put it in an external case for storage/backup

 

[rgarjr]

1. Give it too me
2. Buy a USB enclosure case and use it as that