20g Hard drive question

Anyone know if the Xbox can run two 20g hard drive and switch them depending on the game I want to play? Basically, my 20g is full and I can get another one at a good price. I would then use the new one for my futur purchases and plug my old one when I want to play my older games. I just dont know if the Xbox can run one account on both HD.

Thanks!

I'm not 100% sure if that is going to work, I'm guessing that it won't because technically you are supposed to have an account in one place at a time, for example if you move the account it gets deleted from the source not copied.

What will work however is storing your account on a memory card and then just swapping the HDD back and forth. Don't pay retail prices for it though, it's like 80% cheaper on ebay.