If there is corruption in the OS partitions or the MFS application partitions the problems will probably continue. In that case, starting over from a clean image would be your best option. Erasing the drive isn't necessary, but if you use DvrBARS and want to be absolutely sure, just do a Full restore instead of a Quick restore. That will zero out the unused sectors. On a 2TB Premiere, about 99.7% of the drive is taken up by the MFS media partitions, so your odds of a successful clone are actually pretty good. Even if you do copy a few corrupt recordings it wouldn't be the end of the world.