I have a Live Persistent USB with Linux Mint. After working with it, I like it enough to switch from Ubuntu. The drive has that partition (Caspar) that stored my settings and, presumably, programs and updates.
It also shows a link to “Install Linux Mint”, but I just tried that and it only installs the same basic OS that was installed on the original USB. All the “persistent” changes I had added are not there. I know I can re-do everything I had done earlier, but if there is a way to include the changes, that would save me a lot.
Online searching yielded only the direction of installing TO and not FROM. If I missed a FAQ entry, a link or advice would be appreciated.