Everex Everdisk Owner's Manual And Reference Manual page 78

Q.
Why is it that after exchanging controllers, the drive
does not work?
A. A unique physical format is required for each type of
controller. This means if you formatted your hard disk drive
with one type of controller and then replaced the controller
with another type, you must reformat the drive for the newer
controller to work with your drive. Please refer to Section 6
of this manual for instructions on how to reformat your drive.
Note that reformatting your drive will erase all data on the
drive, so back up all data on the drive before you reformat it.
70