New to Linux and Lite - need to overcome install Issues

[gold_finger]

Thanks, If I do not know how much I did when I created the Flash drive, how do I find out how much I have set aside?

To confirm that you actually do have persistence enabled, do as directed by Scott(0).  If test file is still there after reboot, then persistence is enabled.

To see how much space is available for persistence, just open one of the Home folders (Documents, Pictures, etc.) and look near bottom of the file manager window.  You should see how much space is available there.  Whatever that reads, that's how much is available for persistence.  It can be up to 4GB max. on a typical persistence-enabled USB.

As a side note:  if using a persistent live USB doesn't allow you to properly install the graphics drivers to test setting up your 4 screens, you could also do a real installation to the USB -- same process as installing to the hard drive.  Best to use a 16GB or larger USB for that, but 8GB USB will be good enough for testing purposes if you don't have a larger one.  Only caveat with that is that you will have to manually direct the installer to create and use partitions on the USB only.  And pay special attention to where the bootloader gets installed.  The installer will automatically fill in the MBR of the internal drive for the bootloader.  That will need to be changed to the MBR of the USB.