Cool... so the only thing that can't be done while running dual-retail is actually adding an XBL account to the box?
On another note, I didn't see any option to disable dual-boot in the softmod menu. How would I go about doing this?
Thanks.
PS I cold-booted with a an original Spy vs. Spy game in the drive and attempted to connect to XBL - the game proceeded to try to update my dashboard and failed at about 40%, but in doing so made the box error 21 when booting it unmodded - restoring the MS dash from the softmod menu fixed it however. Any ideas why this happened?
--Edit--
I should add that I don't have any XBL accounts on the xbox at all, I attempted to create an account from within the game