I want to Try out a few versions of Linux in some Live USB's, and Don't know a way to make the persistent partition in the main computer/HDD(in a different partition, of course) instead of in the live USB itself. But, is it possible? if so, How? (I use a windows 10) trying to use my work PC with windows as a Linux with live USB with persistent partition:)
thank you very much!
A Persistent USB will use the first Persistent partition it sees. Usually a persistent partition on the internal HDD is first.
The Persistent partition needs to be an ext partition, say ext4.
The partition should be labelled casper-rw, (Labelling it writable is optional for 20.04).
A second Persistent partition labelled home-rw can be used for home data and settings.
The casper-rw partition will not work with another version of 'Buntu, a home-rw partition will.
The word persistent should also be added to the linux line in grub.cfg:
linux ($root)/casper/vmlinuz boot=casper quiet splash fsck.mode=skip persistent --
You can also choose to boot multiple ISO files, each with it's own persistence files. For reference see:
20.04 booting .iso from GRUB menu
In your case the grub boot loader can be on external USB drive. A mkusb persistent drive uses GRUB 2, the menu can be modified to work.
Warning:
Booting a different Persistent USB in the computer will try to use the Persistent partition. If it contains a different version of Ubuntu It may corrupt the casper-rw partition, (but not a home-rw partition).
