"File020.rar" would be the 20th segment of a larger file. You usually need all parts (01 through 20+) in the same folder to extract the final content using a program like WinRAR or 7-Zip . 2. Digital Forensics or Data Recovery
You might see files labeled File.part01.rar , File.part02.rar , etc. File020 rar
The software assigns generic names based on the order it found them. "File020
In the world of data recovery, when a hard drive or SD card is "wiped" or corrupted, recovery software (like PhotoRec or Recuva) often cannot find the original names of the files. File020 rar