Recovering Large WAV Files (X Live Recordings)
Posted: 22 Jul 2022, 18:13
Hello! I have an SD card that is used in an X_LIVE expansion port (Behringer WING or X32 digital sound board). It requires FAT32 format, and writes WAV files real-time to the card, up to 32-track interleaved file format. While it's doing this, it exceeds the 4gb imposed limit of the file system and so it creates, on-the-fly, new filenames to "continue" the stream.
When recovering from an SD card just today that seemed to lose its filenames for over 30+ files, the only files PhotoRec seems to recover are the <4gb ones. Even with "keep corrupted files" set to YES.
An additional data point is that, while the recover process is running, I see the WAV files build up (e.g., f13599624.wav) in my Finder (MacOS) where I've directed PhotoRec to store the recovered files. It builds to almost full size (3.5gb) while I watch. I can even "preview" the file and I can hear the audio perfectly, telling me the data is there and intact! But then, as soon as it gets to some point in the larger file, the file disappears from my folder, and is not in the report.xml.
The process is still running right now (400gb SD Card, so it'll go about 5 hours). Any idea how to STOP PhotoRec from deleting the file, or deciding it's invalid, or whatever the right terminology might be?
When recovering from an SD card just today that seemed to lose its filenames for over 30+ files, the only files PhotoRec seems to recover are the <4gb ones. Even with "keep corrupted files" set to YES.
An additional data point is that, while the recover process is running, I see the WAV files build up (e.g., f13599624.wav) in my Finder (MacOS) where I've directed PhotoRec to store the recovered files. It builds to almost full size (3.5gb) while I watch. I can even "preview" the file and I can hear the audio perfectly, telling me the data is there and intact! But then, as soon as it gets to some point in the larger file, the file disappears from my folder, and is not in the report.xml.
The process is still running right now (400gb SD Card, so it'll go about 5 hours). Any idea how to STOP PhotoRec from deleting the file, or deciding it's invalid, or whatever the right terminology might be?