I have a 2TB drive that I back my computer up on. I would like to use this drive for storage with my 360 as well if I can. Don't know if this will be a problem but I run both Windows 7 and OS X Snow Leopard on my iMac using Boot Camp. I have partitioned my backup drive so that I can backup both operating systems. 1TB is FAT32 and 1TB is Mac OS X Extended Journaled.
Here's my real question. I read through some stuff on this site and it said you can choose customize in order to choose how much space to use for 360. When I plug it in and choose customize instead of configure, which will erase and format the drive for 360 use, It still says that all content will be removed! So... both configure AND customize will erase what you already have on the drive?