SD Card
Camera Says Card Cannot Be Accessed
Remove the card and scan it before recording again.
Written by the Refindo Recovery Team · Published · Updated
A "cannot access card" error on the camera is often the first warning sign, showing up before a computer would even raise a format prompt. The most common trigger is mundane: a battery that died mid-recording, leaving the camera unable to finalize the file or flush its metadata. Whatever the cause, the safest response is the same: take the card out and keep it away from any in-camera repair or format option until you have scanned it on a computer.
Quick answer
The camera's repair and format options write to the card; a computer scan doesn't. Get the card out and recover the media before the camera "fixes" anything.
Do not let the camera repair the card
- Do not format the card in-camera when it reports an access error.
- Do not accept the camera's "repair card" or "rebuild database" prompt.
- Stop testing the card across different cameras. Each one risks another write.
- Recover to your computer, not back onto the same card.
Why a camera can't access the card
- Interrupted photo or video writes.
- Card file system damage after battery loss or removal while recording.
- Incompatible format between camera models or devices.
- Card wear, bad contacts, or reader instability.
How to scan the card from a computer
Refindo can scan the card through a reader when the computer detects it, letting you preview files before recovery.
- Remove the card from the camera and stop powering it through the camera.
- Insert the card in a reliable reader and open Refindo to select it.
- Run Quick Scan, then Deep Scan if photo or video writes were interrupted.
- Preview recoverable media and save it to your computer or another drive.
When to stop testing the card
- The card disconnects during the scan or reports the wrong capacity.
- The card holds the only copy of irreplaceable photos or footage.
- In-camera repair or a format has already been applied to the card.
- The card contacts or reader are damaged or unstable.
In-camera repair vs computer recovery
In-Camera Repair vs Computer Recovery
Some cameras offer a "repair card" or "recover image database" option. These routines rebuild directory indexes but may overwrite or discard orphaned file entries in the process. Computer-based recovery tools read the card in read-only mode and reconstruct files from raw data, preserving more content. Always prefer scanning from a computer before accepting any in-camera repair.
Battery Depletion During Recording
When a camera battery dies mid-recording, the camera can't finalize the current video file or flush buffered metadata. The card is left with an incomplete directory entry and a truncated video container. On next power-up the camera detects the inconsistency and reports the card as inaccessible. Keeping batteries above 20% and using dual-battery grips reduces this risk significantly.
Frequently Asked Questions
Should I format the card in the camera?
No. In-camera format writes new file system records and can reduce recovery chances.
Should I keep trying the card in different cameras?
Avoid repeated writes or repair prompts. Use a card reader and scan from a computer.
Can RAW photos be recovered?
Yes, in most cases. Camera RAW files (CR3, ARW, NEF, and similar) carry distinctive signatures a scan can recognize, so they recover well as long as the card reads and the data hasn't been overwritten.
Does the camera repair option recover lost photos?
Not reliably. In-camera repair rebuilds directory structures but may skip or overwrite orphaned files. Use a computer-based scan for thorough recovery.
Can I recover video that was recording when the battery died?
Partially. The video data written before the power loss is often recoverable, but the final seconds may be missing because the container was never closed.
Scan before you repair
Run a read-only scan first, preview what is recoverable, then save selected files to a different drive.