QUOTE(xboxgamer733 @ Jul 8 2006, 11:28 PM)

Yes, you can install a 750 GB hard drive in your Xbox.
One way you could do this would be to use XBPartitioner to create a 512 GB (or smaller) F drive, and format the remaining free space as a G drive. Each partition would automatically be formatted with 32 KB clusters.
Have you tried this?
What BIOS are using?
What are the settings of your BIOS?
Everyone says the same thing use XBPartitioner and I have.
I have tried several BIOS and I come to the same problem.
Can't split F & G into Equal parts or make F larger than 127GB.
So at the moment I have to say "NO, you can not install a 750GB HardDrive"