i usually use tc on a usb drive in order to be able to work on several machines. lastly, i used tc on a hp laptop which recognize the pendrive as /dev/sdc* instead of /dev/sda* (as it has been usually recognize on my own AAO laptop).
I booted tc on the hp laptop with usual cheatcodes and let it search for my backup. It did. I worked with tc on the hp laptop, and then shutdown the system without making a backup (which was not useful).
I got back to my AA0, pluged the pendrive and run tc on it, and i noticed the following issues:
1. my backup device is sda2; /opt/.backup_device shows now sda/
2. my bootlocal.sh is empty; i had a command for my keymap in it.