Recovering Photos from a Formatted Memory Card

Does formatting delete photos?

Short answer: usually not immediately.

When you format a memory card, the camera or computer erases the file system — the index that keeps track of where files are stored. The actual image data in the NAND flash memory isn't overwritten. It's just marked as available for new data.

This is why photo recovery software can find images on formatted cards: the photos are still physically present in the flash memory, just invisible to the operating system because the index is gone.

The caveat: once you start shooting new photos after formatting, those new images are written to the space marked as free — which includes the sectors where your old photos live. As you shoot more, recovery becomes harder and eventually impossible for photos in overwritten sectors.

What to do immediately

Stop shooting. Don't take any more photos on the card. Every new photo potentially overwrites an old one.

Take the card out of the camera. Some cameras write metadata files automatically when they detect a card, which can cause overwrites even without shooting.

Don't format again. The second format doesn't help and may use a different format type.

Why JPEG recovery is well-suited for this

JPEG files have a distinctive binary structure: every JPEG starts with the bytes FF D8 FF and ends with FF D9. Recovery software uses these signatures to find JPEGs across the raw flash memory, completely bypassing the (now missing) file system.

JPG Recovery scans the raw sectors of your memory card, looking for these signatures. When it finds a JPEG start marker, it reads forward until it hits the end marker. The file between those markers is your photo.

This technique works even when:

• The file allocation table is completely gone
• The card shows as unformatted
• The camera says "No images found"
• Multiple formats have been performed (as long as the data hasn't been overwritten)

The recovery process

1. Connect the card via a card reader — direct USB from the camera can trigger camera writes.
2. Launch JPG Recovery and select the card.
3. Run a full scan — this reads every sector on the card.
4. Browse the found photos — the preview panel shows thumbnails. Not all found files are complete; some will be partial.
5. Select the photos you want and recover to a different drive or folder.

What about RAW files?

JPG Recovery focuses on JPEG files. If you shoot in RAW format (CR2, NEF, ARW, ORF, etc.), you'll need a general-purpose flash recovery tool that supports those formats. Flash File Recovery handles both JPEG and RAW alongside each other.

Expected recovery results

Recovery from a quick-formatted card (default camera format) is typically very good, especially if you acted quickly. Recovery rates in the 90%+ range for recently formatted cards are common.

Quick format only erases the file table. Full format (sometimes called "write zeros" or "secure format") overwrites all sectors with zeros. Full format significantly reduces or eliminates recovery chances.

Camera formats are almost always quick formats. PC-side formats using the default Windows Format dialog are also quick formats unless you uncheck "Quick Format."

After recovery

Keep the recovered photos and the memory card separate. Don't write the recovered files back to the same card — write to your computer's hard drive or a cloud service. Only reuse the card once you've confirmed the recovered files are intact.