Formatted the wrong drive? Breathe. Then stop.

A quick format — the default nearly everywhere — writes a fresh, empty file system: a new index at the front of the drive, your data untouched behind it. Recovery reads past the new emptiness, finds the old structures or carves the files directly, and typically returns the bulk of what was there. A full format on modern Windows is graver — it zeroes as it goes — and honesty requires saying so: fully-formatted regions are gone, and the diagnostic will map exactly where the zeroing stopped if it was interrupted. The universal instruction either way: write nothing to the drive — and if the format was step one of ‘reinstalling Windows’, do not proceed to step two on that disk.

The bench sees the same four stories on repeat: the two-drive mix-up (D: meant, C: clicked — drive letters betray everyone eventually); the OS reinstall that formatted the data partition it was supposed to sail past; the ‘initialize disk’ prompt obeyed when an old drive’s partition table hiccupped — formatting a drive that was merely confused; and the in-camera format executed one import too early. Each leaves a different signature and each recovers differently — which folders, which file types, with or without names — and the free diagnostic tells you precisely which story yours will be before a penny moves.