Linux Chromebook Steam Gaming

[DepressionLord]

So I followed the tutorial on this youtube video. https://www.youtube.com/watch?v=iJOk82k5H7c
and for some reason, I cannot see the fdisk list on my terminal when imputed, When correctly imputed, the terminal decides to list nothing. when I try to mount the sd card into the storage, it would say "Permission Denied". So I am a bit lost on what to do. I tried to use Chown command to put permissions away but that didn't work because I'm not sure what directory or what i'm supposed to type to make the SD Card available? I need some serious help.

[cSg|mc-Hotsauce]

Steam for Linux forum...

https://steamcommunity.com/app/221410/discussions/