Storage media · the memory card
How to extract files from an SD card safely
How do I get files off an SD card without losing any?
Short answer
Always copy, never move: in a stable card reader, copy the complete recording folder, usually DCIM, to your computer, wait until the transfer finishes and eject the card properly. A move deletes originals as soon as the copy seems done. Reuse or format the card only after a second verified copy exists.
The situation
The recordings need to move from the card to the computer without anything going missing on the way.
Reading a card needs nothing more than a stable card reader: insert the card, open the drive and copy the complete recording folder — on cameras usually DCIM — to the computer. Three points matter: copy instead of move, let the transfer finish completely, then eject the card properly. Only once two verified copies exist should the card record again.
01 / Diagnose
Work out what actually disappeared
If copying aborts or files are missing at the destination, establish the cause first: a loose adapter, an overlong USB cable or a reader that briefly drops the card under load. If the computer does not show the card at all, or asks you to format it, this is no longer a copying problem but a case for a read-only scan.
When moving, the operating system deletes the source file as soon as it considers the destination copy written. If the connection breaks at exactly that moment, the file is missing in both places. Copying separates those two steps and leaves the original untouched.
Check the last known path, trash and backups without writing to the original device.
02 / Protect the source
Preserve the best recovery chance
- 1
Use a directly connected, stable card reader rather than an adapter behind a hub.
- 2
Copy the complete recording folder including subfolders and sidecar files instead of picking individual files.
- 3
Wait for the transfer to finish, then eject the card through the operating system.
- 4
Create a second copy on a physically different drive and verify both before the card is reused.
Do not move the recordings and do not use an import function with a delete-after-import option. Do not pull the card during the transfer. Do not format the card straight after import while the copy is unverified.
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 normal copy assumes the operating system reads the card without errors. If it reports read errors, a RAW volume or a required format, another copy attempt will not help. A read-only scan is the right route then; File Recovery Hero supports stable, readable exFAT cards and uncompressed disk images for that.
04 / Verify
Check the recovered content, not just its name
Compare file count and total size between card and destination. Open a sample of photos in full and play videos including audio to the end. For RAW files the embedded preview is not sufficient evidence.
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 the memory card be recovered in this situation?+
Reading a card needs nothing more than a stable card reader: insert the card, open the drive and copy the complete recording folder — on cameras usually DCIM — to the computer. Three points matter: copy instead of move, let the transfer finish completely, then eject the card properly. Only once two verified copies exist should the card record again. The result still depends on what remains readable on the source.
What should I avoid before scanning?+
Do not move the recordings and do not use an import function with a delete-after-import option.
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?+
Compare file count and total size between card and destination.