What happens if I replace my hard disk drive with a different brand (same properties: SATA2,AHCI,NCQ etc.) I think, the PM doesn't touch the remaining part of the new drive -when copying the OS partition from my backup- and leaves it unallocated, so that I could resize C and create my new partitions on the new drive. Should I make a backup of MBR as well in this scenario? Are there any potential problems? Thanks in advance.