Built EVO HD with games on, want to change!

I have a Xbox with 120Mb HD, MOD & EVO BIOS. I also have a second Xbox with no chip in it. Is there a way of swapping the hard drive with mod in it, to the one without mod?
Or is a chip needed everytime?

 

To run games off of the hard drive you have to have a mod chip installed.

 

so you cant prep a hard drvie then swap it in another xbox without a chip?
bugger looks like i will have to get a matrix then, tanks NRG, MUCHO GRASSIAS

 

No problem