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My current setup of Ubuntu 17.10 on an Intel NUC is acting kind of strange lately. Over the years, I had to put in quite a few days of researching an trial and error to sort out a lot of problems that the Ubuntu/NUC combination brings along since Ubuntu is not officially supported on my NUC.
So I thought I could make a backup of my whole M.2 SSD, format it and start over with the new 18.04. If something should go wrong, I could then just restore the backup and without any additional work, my setup would be exactly the way it was before.
In this forum, I found Clonezilla might be the right option for me. As far as I understand it, I could use the Live version on an USB Stick which also has enough space left for the backup. Just connect it to my NUC, booting from it and making the backup. Same for the restoring part, connecting, booting formatting the whole SSD and restoring. And it's always the whole SSD, not just the
/ mount and all the other mounts like
/boot/efi are missing, right?