I only have two flash drives: 4GB and 1GB.
I would like to create a bootable flash drive for a live Lubuntu installation, so that in case my very old laptop's Lubuntu can't boot, I can rescue my files by booting into the live Lubuntu out of my flash drive.
Since lubuntu-18.04-desktop-amd64.iso is 1GB, my 1GB flash drive (with actual size a little smaller) will probably not be able to hold it.
I am not sure if it is a common practice to dedicate a whole flash drive to a live OS, but I think it is a waste to use the entire 4GB flash drive for live Lubuntu.
So I was wondering if there is an alternative to lubuntu-18.04-desktop-amd64.iso for my 1GB flash drive? How can I use the alternative to boot into my laptop, and to retrieve my files there? I haven't tried other Linux distributions other than Ubuntu, so I am scared of trying those minimalist Linux distributions without GUI, but I am a little familiar with
rsync which I can use to copy the files out.