Find original filename after Data Rescue recovery Recently, I lost 1,7TB on videofiles on my external hard drive. A terrible loss since it took me many evenings categorising all this data.
With a deep-scan with DataRescue 3, I was able to recover most of it, but they all have the same awful filename "M00001.avi", "M00002.avi",...



First question, is there any way to improve this results? Meaning to retrieve the file including the proper naming?
Data rescue is fairly sophisticated program on the Mac. If there were any traces the filename in the filesystem, that software puts the file name back when it performs a simple undelete. What you are seeing are video fragments of files that were found on the filesystem totally detached from a directory entry.

In short you're not going to be able to get the file names back without a backup or other source of the file names. 

Hopefully, those AVI files are actually complete files and not just fragments of video content that it managed patch together with a proper header and a sequentially made-up filename.