.R01 File Extension
File TypeWinRAR Split Archive Part 1
This file is saved in a binary format, which requires a specific program to read its contents.
What is an R01 file?
Part one of a compressed archive split into several parts; usually created for saving a large archive on multiple disks; may use file extensions numbered from R00 to R99.
File archives with ".Rxx" file extensions may be created with either WinRAR for Windows or RAR for Mac and Unix.