I have created a bootable thumbdrive with kali. I've also created a partition for persistence but im not able to use any commands I need to use to install kali with persistence usb, such as fdisk -l (I can see the path that is usr/sbin/fdisk) but dont know how to make it work, have tried which fdisk and sudo which fdisk (thats how i know the path). Can't fix it, any ideas how to make them work? Maybe because I have no root access?