@trawglodyte there are a mere few of WoofCE PUPs that will boot without a need to use the psave= parm at distro Menu to start the boot. I am not convince that Ventoy is inserting a pmedia= parm, but what does happen is that once the distro reaches the desktop, assuming it boots to desktop, it "locks" the boot partition rendering it unavailable. This was discussed, but developers have not investigated why this is occurring.
I am not in disagreement with @gyrog who (he knows) I respect the intelligence he personally has added to WoofCE PUPs to KNOW where session-management is to reside (that bit of work, as small in scope as it is; is brilliant)
My advice, and somewhere the same from @gyrog is when booting WoofCE ISO files, to boot them via SG2D.
This is to be done, until WoofCE development gets around to resolving the 'locking' issue it has. They, currently, have NOT accepted this as a bug because Ventoy is the only known occurrence of this locking phenom.
This problem is NOT evident in other non-WoofCE distros on the forum.
SG2D boots all WoofCEs, I have tested except 2 of the current VanillaPUP64s, tested couple weeks ago.
If you SG2D launch a WoofCE ISO file that does not boot to desktop, IT IS DUE TO A BUG IN THE BOOTING PUP!
Enjoy.
BTW @trawglodyte you now know "WHY" I have continued to insist to have SG2D in your BOOTISOS folder as it caSG2D n be launched by Ventoy and will boot those pesky WoofCE ISO files without issue. SG2D, also boots all other forum distro ISO files, as well.
BTW2: When I do boot a WoofCE via VEntoy, I interrupt the launched distro's menu to add "psave=Persistence:/Sessions/" to the Menu's stanza that I select. This will direct the PUP to overide and locate its session-management location when it does boot to desktop. For me, I keep ALL of my sessions for EVERY forum distro in this Sessions folder on a drive labeled Persistence. Every booting forum distro is directed to find its sessions there.
REMEMBER: Booting a forum distro's ISO file coupled with its save-session is a "Frugal" experience! ... its the same...just without the need to do all the work of moving files, creating stanzas, figuring out storage needs, etc. That' why this is so simple once setup as it is merely a ISO file download and run, now.