Twenty years of teaching material, gone in one click of a dialogue box — and still, physically, entirely there. A quick format does not erase your data. It erases the index that finds it.
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The owner formatted the wrong device — the SD card rather than the one they meant — and two decades of lesson files, worksheets and presentations disappeared. They ran a recovery utility from the internet, which found nothing, which convinced them the files were gone.
They were not gone. They had not even moved.
When you quick-format a card, the file system writes a fresh, empty allocation table — the index that says which file lives in which blocks. Every one of those blocks still holds exactly what it held a second earlier. The card reports itself as empty because the index is empty. The data is untouched.
Recovery is therefore a matter of ignoring the index entirely and reading the raw card, looking for the signatures that mark the start of a JPEG, a PDF, a Word document — and rebuilding the structure from the contents.
Two things break this, and both are things people do next:
Take one more photo, save one more file, and you may be writing directly over the blocks you want back. This is the entire reason the first instruction is always stop using it.
A full format writes to every sector. That is genuinely destructive, and it is why the distinction matters.
And a point worth holding onto, because it is the opposite of what is true on an SSD: a memory card in a camera has no TRIM. Nothing is quietly wiping the free blocks in the background. On an SSD, deleted data is usually erased within seconds and genuinely unrecoverable. On an SD card, it sits there patiently until something writes over it. The same mistake has a completely different outcome depending on the device.
The file system was rebuilt from the raw image and the teaching archive came back with its folder structure intact.
Formatted-card recoveries are usually good, and the reason is simple: the client stopped. What determines the outcome is almost never the format itself — it is how much was written to the card afterwards. A card formatted and immediately set aside is close to a complete recovery. A card that was formatted, then used for a weekend of shooting, has had the very blocks you want overwritten with new photographs.
The moment you realise: take the card out. Not "finish the shoot first". Not "back up what is on there now". Out.
And do not run recovery software on the card itself. Most of it writes its own temporary files to the drive it is scanning, and on a small card that can land squarely on top of what you are trying to save. If it matters, image the card first — or let someone else do it, on a write-blocker.
The owner here did the one thing that mattered: they stopped, and they brought it in.
Drop the drive at our Quayside reception, or post it to us — it costs nothing to find out what happened. You get a written figure from the fixed bands before any work begins.