[Tim Ellis]

I just registered to thank you, Karl. I accidentally deleted some files from my Zoom H5 recorder and the recovered files (recorded using MULTI mode) were all multiplexed like this. Using your steps I was able to successfully cleanly split the file into its two component parts.

In case anyone else comes here looking, the MULTI format file on the Zoom H5 had parts that were split every 32,768 (8000 hex) bytes. At the beginning of the section was an eight-byte string that began with the characters “data” and when I deleted those eight bytes and split
the file up every 32,768 bytes using HxD, everything went perfectly.

The one trick that threw me for a bit of a loop was that I didn’t realize that when you use “Extras -> File tools -> Split…” in HxD, it splits based on the file as-saved, not whatever is in the current view. I kept trying to delete the 8-byte “dataxxxx” part and then split but everything was slightly offset. It was because I wasn’t saving the file after deleting the leading 8 bytes.

Anyway, thanks again Karl!