Recovery methods · stable readable exFAT source
read-only recovery scan: start safely
How do I start read-only recovery scan without changing the source?
Short answer
First identify the source by model and capacity, and choose a physically different drive for exports. A read-only scan does not write to the source, but saving results back onto it would overwrite what you want to recover. Decline every format or repair prompt, and stop if the device disconnects or gets hot.
The situation
The source and destination for read-only recovery scan have not yet been safely separated.
Read-only means the scan itself never writes to the card, but the surrounding decisions can still destroy data. The dangerous moments are choosing the device to scan and choosing where exports land; if those two point at the same disk, a safe method overwrites exactly what it just found.
01 / Diagnose
Work out what actually disappeared
Device lists rarely show a friendly name. Several cards of the same capacity, an internal disk and an external enclosure can all appear with similar entries, and a card reader may change its position between connections. Operating systems add their own pressure by offering to format or repair an unreadable volume the moment it is attached.
Selecting the wrong device or export path can make a sound method destructive. For read-only recovery scan, this matters because a safe scan keeps the read source and export destination separate
Check the last known path, trash and backups without writing to the original device.
02 / Protect the source
Preserve the best recovery chance
- 1
Disconnect every storage device you do not need, then attach the card alone so that only one removable volume is present during the scan.
- 2
Note the model and capacity shown for that device and match them against the label on the card before selecting anything.
- 3
Connect a separate drive with more free space than the card holds and set it as the export destination, never a folder on the source.
- 4
Start the scan, decline every prompt to format or repair, and stop immediately if the device drops out or becomes noticeably warm.
Do not run disk repair, error checking or First Aid before scanning, and do not export results into a folder on the card. Repair tools write new structures over the old ones, and exporting back to the source can land on the very blocks the scan is reading.
03 / Choose the method
Match the tool to the source
For stable, readable exFAT, NTFS and FAT16/FAT32 or uncompressed IMG, DD, RAW and BIN images.
Unconfirmed exports are marked .UNVERIFIED.
A read-only approach protects the source, not a failing one: a card with physical damage, clicking noises or read errors belongs with a data-recovery lab. File Recovery Hero also leaves encrypted media and APFS, HFS+ or ext4 volumes untouched, and its scan is free while exporting needs a licence.
04 / Verify
Check the recovered content, not just its name
The setup is correct when the source appears with the capacity you expect, the destination sits on a physically different device, and the free space on the card stays unchanged from start to finish. After the run, the card should still show the same used and free values as before.
Keep the source until two verified copies exist. One working preview is not enough.
Sources and technical references
FAQ
Questions about this recovery case
Can stable readable exFAT source be recovered in this situation?+
Read-only means the scan itself never writes to the card, but the surrounding decisions can still destroy data. The dangerous moments are choosing the device to scan and choosing where exports land; if those two point at the same disk, a safe method overwrites exactly what it just found. The result still depends on what remains readable on the source.
What should I avoid before scanning?+
Do not run disk repair, error checking or First Aid before scanning, and do not export results into a folder on the card.
Does scanning write to my memory card?+
Your memory card is only read. Nothing is saved to it.
How do I know whether the result is complete?+
The setup is correct when the source appears with the capacity you expect, the destination sits on a physically different device, and the free space on the card stays unchanged from start to finish.