So here I just installed Timeshift on my ubuntu 20.04 LTS. As I was trying to set up the backup of my entire system using timeshift, it shows that I can only save backup data on my primary partition. (Mind you that my system is dual-booted with windows 11)

I connected my external hard drive to my system to backup data on it using timeshift, but it shows that "The external hard drive does not have a linux partition" and hence I am unable to backup my data using timeshift.

Currently I have backed up my files normally using the "backups" option, on my external hard drive.

I am a newbie to linux, so I wanted to ask as to how can I create a Linux Partition on an external hard drive?

Also, is "Backup" enough to restore my files if my system somehow breaks down ?

The file system which my external hard drive shows is ExFat