[ERROR] /dev/sda1 is already mounted as /boot/efi, refusing to use it about system-tar-and-restore HOT 3 OPEN

You are trying to restore (extract the contents of an archive) to a partition that is already mounted from the running system, and probably its in use. The script will not accept it, its a safety check.

Can you describe more what are you trying to do by steps?

from system-tar-and-restore.

Hi @tritonas00. Thank you for that explanation and your quick response.

My ultimate goal is to know that I can restore any Linux system that I have to another machine, VPS, or VM for my own knowledge and safeguards. I do not want to rely on my VPS provider's snapshot systems.

Essentially, I created the backup on a live VPS that is running my software. There are no issues on this machine. I used STAR to backup the file. I downloaded it to my newly created Ubuntu Server VM on a separate machine. Installed the necessary pre-requisites for STAR and then STAR itself.

How would I restore my STAR backup that I created to another machine for recovery if I ever need to do that. I would want to recover everything and boot into it error free for development or disaster recover purposes.

from system-tar-and-restore.

The process to backup/restore should be:

Boot the system you want to backup, run star's backup mode
Boot the target system (the one you want to restore the backup) from a live cd/environment and run star's restore mode

The target disk shouldn't be in use anywhere

from system-tar-and-restore.