HOW TO BACKUP RUST??

hello i have a problem with rust and is this:

i can not backup the game. i have tryed saving the folder ‘‘steamapps/commond’’ and it doesn’t work when i put it back to my folder and open steam i put install and say discovering existing files, after finish steam start to re-download the complete game.

i have rust in my laptop too and i have backuped my laptop rust and my desktop rust before formating but it not work with any of 2 backups.

i have tryed the ‘‘backup and restore’’ utility from steam but same situation.

what can i do? how to restore it?? my internet is slow i don’t want to download again.

thanks for help and sorry for my bad english.!

bump.

really anyone know how to do it??

no, you’re just going to have to re install it however the inconvenience