Cameras · Sony exFAT SDXC card
Sony SDXC card has an empty M4ROOT folder
Why is M4ROOT empty on a Sony recording card?
Short answer
Usually because the entries inside it were deleted or the camera's database was damaged, while the parent folder survived. The MP4 clips that belonged under CLIP can still exist on the card. Do not rebuild the database or delete leftover folders; keep the complete hierarchy and scan the exFAT card read-only for XAVC MP4.
The situation
M4ROOT exists but expected main clips under CLIP are missing.
An empty M4ROOT says something about the directory, not about the card's contents. The parent folder survived because its own entry was never touched, while the entries for the takes inside CLIP were released, which is why camera and computer both show you nothing.
01 / Diagnose
Work out what actually disappeared
Sony files recordings under M4ROOT/CLIP together with a small management database. When that database is damaged, or when the child entries were deleted, the camera reports no clips even though every MP4 still lies where it was written. An SDXC card is exFAT from the factory, so the layout is predictable and a read-only scan can locate the takes without any help from the directory.
Deleted child entries or a damaged database can leave the parent folder while hiding MP4 assets.
Check the last known path, trash and backups without writing to the original device.
02 / Protect the source
Preserve the best recovery chance
- 1
Decline any camera offer to repair or rebuild the image database and switch the body off before it writes management data.
- 2
Read the card through a card reader and leave M4ROOT, CLIP, SUB and every leftover folder in place, however empty they look.
- 3
Scan the exFAT volume read-only for XAVC MP4 across its full capacity rather than restricting the search to the CLIP path.
- 4
Export the takes to another drive and sort them by duration and creation time to see which part of the session returned.
Do not delete the empty folders for tidiness, do not copy anything onto the card, and do not keep recording while you work out what happened. Every write can occupy clusters that still hold a take, and one new recording covers far more space than those folders ever did.
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 directory cannot be rebuilt as it was, so original names and folder order may not return. File Recovery Hero reads exFAT, NTFS and FAT volumes without writing to them; it does not repair the camera's management database and it cannot help with a card that has become physically unreadable.
04 / Verify
Check the recovered content, not just its name
A take is genuinely back when it plays at the resolution you shot, reaches its expected length and shows continuous timecode instead of a jump partway. Compare the number of recovered clips with the last file number the camera used: sessions are numbered consecutively, so gaps stand out immediately.
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 Sony exFAT SDXC card be recovered in this situation?+
An empty M4ROOT says something about the directory, not about the card's contents. The parent folder survived because its own entry was never touched, while the entries for the takes inside CLIP were released, which is why camera and computer both show you nothing. The result still depends on what remains readable on the source.
What should I avoid before scanning?+
Do not delete the empty folders for tidiness, do not copy anything onto the card, and do not keep recording while you work out what happened.
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?+
A take is genuinely back when it plays at the resolution you shot, reaches its expected length and shows continuous timecode instead of a jump partway.