I didn't have to tear mine apart 'and' I answered this question the other day. See your first thread.
Anyway, the point is moot. You can't just drop a new 250Gig HD in a 522 and flip it on.
It has proprietary software/encryption on the drive that you can't copy like you can on a computer hard drive.
Even if you 'could' clone the drive, it would have to be the exact same size and model # since the software checks to see if the HD has been tampered with.
Best bet is the 'hands off' approach.