Who’s Bootin’? Dissecting the Master Boot Record

This post is a practical walkthrough of MBR fundamentals (sectors, CHS vs LBA, 512-byte layout, partition entries, 0x55AA signature) and how to decode and modify partition data (little-endian LBA values) to facilitate forensic workflows on encrypted volumes; it demonstrates crafting a synthetic MBR to trigger a challenge/response prompt for decryption and lists tools like Sleuth Kit’s mmls and hex editors for validation and manipulation.