: Use a tool like WinRAR or 7-Zip . Right-click on part01.rar and select "Extract Here." The software will automatically pull data from part05 and all other volumes to reconstruct the full game installer.
: Often refers to the release group GirlFit (a repack/distribution group). 081222 : The release date (December 22, 2022). ERDE : Shorthand for Elden Ring (ER) Deluxe Edition (DE). 1.07.0 : The specific game version/patch level. GF081222-ERDE-1.07.0-ELA.part05.rar
: If you only have part 05, the extraction will fail. You need to locate the source where you found this file and download the remaining parts of the set. : Use a tool like WinRAR or 7-Zip