i've done some more playing with ventoy; the significant thing is persistence is working with release 1.0.13. this is usb stucture of usb where 1st level "ventoy" is label for usb :
ventoy
├── ISO
│ └── linuxmint-19.3-cinnamon-64bit.iso
├── persistence.img
└── ventoy
└── ventoy.json
ventoy.json is :
{
"control": [
{ "VTOY_DEFAULT_MENU_MODE": "0" },
{ "VTOY_FILT_DOT_UNDERSCORE_FILE": "1" },
{ "VTOY_DEFAULT_SEARCH_ROOT": "/ISO" }
],
"persistence": [
{
"image": "/ISO/linuxmint-19.3-cinnamon-64bit.iso",
"backend": "/persistence.img"
}
]
}
the other thing recently via posts
@Liispeth and
@gvisoc is that the Mints are not working
(if i understand correctly with uefi) which explains why Liispeth had to disable secure boot to be able to boot Mint from usb
basically i have the same problem with Slackware but it works fine with EFI and elilo but with secure boot disabled and legacy boot enabled