This guide will cover following scenario – you have a new machine, and fresh Proxmox installation on it. You transferred your VMs from another, “old” Proxmox machine to USB drive by backing them up on it. So, your VM backups are on a USB drive now, and you would like to transfer them to new Proxmox machine. After you plug in USB drive to your new Proxmox installation on another machine – you cannot see your backup, what now?