Android-x86-81-r1_Live Persistant Storage

[Grizzly]

Hi All

Sorry for OT post

I'm playing with "Android-x86-81-r1", amazingly it works (on all my boxies so 
far) but using the live USB I have to setup for every box I test on, and repeat 
that every time

I've looked around the net, and even searched the "Android-x86" group for 
answers

Does anyone else have any ideas on how to add "Persistant Storage" to the live 
USB, either at burn time or post burn? so far I have used these to make the USB

LinuxLive2.9.4
Rufus-2.9
USB-Installer-1.9.8.6
USB-Installer-1.9.8.7
YUMI-2.0.6.5
And "Create startup Media" in Ubuntu 16.04 & 18.04

None give "add persistant storage option" (at least for Android-x86-81-r1.iso)

Talk OL if this is not of interest to anyone else here