I am thinking of using rsync to copy as nobody/nogroup with a file on what group and owner was so I can full restore. With that would I lose anything more than group and owner if backing up from root(/) of like my file system even if from live USB(so actually like /media/... root to back up)? I know there is a lot of stuff in Ubuntu I do not know. I am thinking of this as a way to be able to access like my stuff on a Windows computer. I would be using ext4 USBs and a Windows specialized reader. If you know a Windows reader of ext4 that can access root owned and grouped directories that would also be a solution. I have seen that normal owned stuff is just read only but readable including USB. If root owned stuff can be read on any Windows reader that would also be a solution. I am on a Lenovo Thinkpad T460 with Ubuntu 22.04.3 LTS desktop with Ubuntu Pro. All as per one might be maybe or might not be maybe, maybe or maybe not, maybe.

This link might help: https://www.howtogeek.com/112888/3-w...-from-windows/

I am sorry, I should have mentioned I only have Windows 10 but can upgrade maybe or maybe not, maybe.

I just realized, I can access from a live USB and transfer stuff from that to main system so problem solved maybe or maybe not, maybe.