the encryption state is not in the MBR - it's just the boot stub.
1. replaces the SBR with the pre-activation captured MBR
2. Restores the SBR
3. Sets a standard MBR in the post-pre boot storage, replacing the original stored MBR
SBR = SafeBoot Boot Record of course.
Not at all. MBR (Master Boot Record - as we know it) contains code area, disk signature, primary partition table, MBR signature and some unused areas.
As we all know it, only a portion of MBR gets modified, saved or restored with EEPC 5.x and associated utilities.
SBR can have different meaning as it is SafeBoot modified whole or a portion of MBR.