Totally new to Linux. My goal is to backup (or copy), in the simplest possible way, all necessary os files, drivers apps etc. I backup my home folder regularly so data recovery is covered. I have no problem with reinstalling Ubuntu from a LiveCD usb stick (I have done this many times). Obviously I would investigate and attempt any simple fixes first.
I do not want to do a complete system image of whole disk as I have data backups done regularly. Also it would not fit on a LiveCD DVD or USB stick plus I would have to do a complete disk image every time I wanted a system backup.
What I would like to do in the event of a crash / system failure is as follows:-
1 - Reinstall Ubuntu (possibly to a new disk if disk has failed) from my existing Ubuntu LiveCD of original system
2 - Restore / Copy all backed up system folders files
The end result being an identical system to before, with all drivers, applications, desktop, personal preferences etc. Bearing in mind it may be a new HD, possibly different size / structure.
What I would like to know is
1 - simplest way to backup or copy all necessary folders / files to preserve the system and bring original system up to date
2 - how to restore / copy back, again in simplest way
All my system files are on a single ext4 partition booting to /. I have Duplicity but am unsure how to use it. Apologies in advance if I have missed anything du to my inexperience.