HDHacker

Freeware tool by Dimio that saves and restores the master boot record and boot sectors of disks. Latest release is v1.6.2 from July 2017; unmaintained but functional.

Get it

The promise

• ✓ No ads
• ✓ No purchases
• ✓ No subscriptions
• ✓ No trials
• ✓ No nagging
• ✓ No surprise bundles

Something wrong?

Reports go to a human review queue. No timeline promised — this is a small pilot, but every report gets read.