file checksums

On WindowsForum.com, the file checksums tag gathers discussion of using hash values to verify that files are intact and unaltered. The tagged content centers on SHA-256 checksums as a practical way to detect silent data corruption, often called bit rot, in photo and video archives kept on external drives. Rather than trusting that files still open normally in File Explorer, the advice is to generate and compare checksums over time and to combine that verification with a 3-2-1 backup strategy using multiple copies on different media. The coverage is cautious about how far corruption warnings should be taken, keeping the focus on simple, verifiable integrity checks.