Memory cards · filesystem fault · ADR-2025-3457
The Folder Read Empty. The Numbers Disagreed.
The card had spent half a year unused, in the old camera for approximately six months
, and it came out of the drawer looking precisely as it had gone in: physically undamaged
, without a mark on it anywhere. Every machine she put it in said the same unhelpful thing, that the folder is empty or that there are no valid pictures
— laptop, desktop and a second camera. Then she noticed the detail that made the enquiry worth having. The card was offering only 14gb of usable space
out of sixteen, and she had done the arithmetic.
Same story on yours? Tell us what it does — the look is free.
0203 0868633
What failed, and why.
Two numbers were disagreeing, and one of them was telling the truth. A card that is genuinely empty offers all of its capacity as free. Hers offered two gigabytes fewer than it holds, which is the file system saying that something occupies that space while no longer being able to say what. That is what a damaged index looks like from outside: the records that name the pictures and point at where each begins have stopped making sense, and every machine that reads a card reports politely what it finds, which is nothing. None of it touches the pictures. They sit where the camera put them, indifferent to whether anything can find them.
What the bench did with it.
The order of the job →| Equipment used | Its work on this job | The reason for it |
|---|---|---|
| Klennet Carver, stills | Rebuilt whole photographs out of blocks the index no longer named | It reads the internal shape of a picture file, where blunter tools return pieces that open in nothing |
| PC-3000 Flash | Copied the card off whole before a single structure was examined | Reads flash directly off the chips, going round the controller, with a maker-ID library kept current here |
| UFS Explorer Professional Recovery | Mended the records that survived, and read the space they had stopped listing | Opens APFS, ReFS, XFS, ZFS and Btrfs when other software will not |
What the bench did with it.
The copy comes before the question
Imaging came first, behind a write-blocker on a controlled reader, with a hash across the copy so that every later step could be shown to have run against the same bytes. The card then went into a bag and stayed in it. No diagnosis is ever urgent enough to be worth performing on an original.
The occupied space was the place to look
On the copy the structures were opened, and what they showed matched what she had spotted. The records that should have listed the folder were damaged, and the allocation had blocks marked in use that nothing in the directory pointed at. Wherever a record still held together it was mended and used, since a photograph lifted through its own entry arrives with filename, date and chain intact. The blocks nothing pointed at were the job.
A photograph will identify itself if asked
Pictures carve well, because a photograph is built to a pattern and that pattern is recognisable from within, which is the whole reason a card with a broken index is worth posting anywhere. Those occupied blocks were read through for the signatures that open a JPEG and a camera raw, the data behind each one was reassembled in order, and each result was checked by opening it rather than by counting it. A file that will not render has not come back, whatever a listing says of it.
What went home.
Years of pictures went home on new media. Where a record had survived they arrived under their own filenames and dates; the remainder came under names the bench generated. One instruction went with them: a device offering to fix a card that reads empty is offering to write over the records that would have brought it back. A card is priced in the published £250 + VAT band, seen in writing beforehand.
Begin here if yours is doing the same thing.
More jobs off camera cards.
Yours doing something similar? Power it down first.
Prices are published and fixed. Memory cards and USB sticks are priced at £250 + VAT. A drive on its own comes to £300 + VAT. Anything holding a second disk, whether RAID, NAS or a server, opens at £500 + VAT. The first look costs nothing, and the figure that follows is fixed and in writing before a penny is charged. Switch it off and post it in. Most jobs carry no fee where no files return.