Recovery methods · the memory card
What formatting an SD card actually means
What does formatting an SD card mean?
Short answer
Not necessarily erasing: formatting writes a new, empty file system, so camera and computer treat the card as empty. A quick format only replaces the directory and leaves the photo data until new recordings reuse the space, while a full or overwrite format also wipes the data area. SDXC cards use exFAT, SDHC cards usually FAT32.
The situation
Formatting creates a new, empty file system — it does not necessarily erase the data itself.
Formatting means a new, empty file system is written to the card. The directory is replaced so camera and computer treat the card as empty again. During a quick format the actual data blocks usually stay untouched — only the signpost to them disappears. A full format additionally overwrites the storage area, and after that nothing can be brought back.
01 / Diagnose
Work out what actually disappeared
Separate three operations that everyday language mixes together. Deleting removes individual directory entries. A quick format replaces the whole directory and allocation table. A full format writes across the entire storage area as well. Only the first two leave realistic prospects. Which variant a device performs is rarely stated in the prompt — cameras normally quick-format, operating systems offer both.
A file system manages two separate things: directory information and data areas. A quick format only rewrites the administration. The image data physically remains on the card until a new recording claims exactly those areas. That is why the first shot taken after formatting often decides the outcome.
Check the last known path, trash and backups without writing to the original device.
02 / Protect the source
Preserve the best recovery chance
- 1
Remove the card from the camera or reader immediately if recordings are missing after a format.
- 2
Do not confirm another format and decline any offered file-system repair.
- 3
Connect the card through a stable reader and examine it read-only.
- 4
Export recovered recordings to a physically different drive and verify them completely.
Do not reformat the card to prepare it for a scanner. Do not take a test shot to check that it works. Do not run a file-system repair before the recordings you need are secured.
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.
File Recovery Hero examines stable, readable exFAT and FAT32 cards and uncompressed IMG, DD, RAW and BIN images. On FAT32, which smaller cards frequently use, only contiguously stored files come back in full; fragmented ones are marked as incomplete. After a full format, or after new recordings covering the affected area, no program can bring the old data back.
04 / Verify
Check the recovered content, not just its name
Verify each recovered file completely: plausible size, matching format and readability from beginning to end. Open photos fully and play videos including audio to the end. A thumbnail is not 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?+
Formatting means a new, empty file system is written to the card. The directory is replaced so camera and computer treat the card as empty again. During a quick format the actual data blocks usually stay untouched — only the signpost to them disappears. A full format additionally overwrites the storage area, and after that nothing can be brought back. The result still depends on what remains readable on the source.
What should I avoid before scanning?+
Do not reformat the card to prepare it for a scanner.
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?+
Verify each recovered file completely: plausible size, matching format and readability from beginning to end.