There's a guide around here that involves saving sectors from a stock (or in my case a HDDHackr'd one) OEM 360 drive. Unfortunately, my stock drives are at a different location, so I was wondering how to take my USB 250GB drive and make it so the 360 recognizes it as an internal drive with the Xbox 1 partition and all.
I want to run retail games off the internal one as well as dashboards and stuff, instead of having the USB connected every-time. How do I go about this?

Thanks for the help.