If you have a working grub2 you can boot any and all FR/KL distros straight from their iso using the following grub.cfg stanza formats. I used these (alternative options) to boot KLU-jam-XFCEbase-1.0 iso, but just straight into normal grub.cfg and not using or needing the likes of Ventoy, SG2D or ISObooter3.
This is a well-known method for using grub2 to boot live isos straight from the iso file. For example: https://www.linux.com/training-tutorial ... iso-grub2/
https://forums.gentoo.org/viewtopic-t-7 ... 2+iso.html
https://community.linuxmint.com/tutorial/view/1846
https://www.gnu.org/software/grub/manua ... l#loopback
However, it would certainly be a great convenience if a script was used to auto-construct the stanza in similar way to wd_grubconfig. I have never tried any release of ISObooter (though intended to), but imagine from reading posts in its thread that it likely provides such a script that is tailored for several distros.
NOTE1 from below that I had a partition on my SSD harddrive that had label "archive", so I just used that one in the following, which worked and save2flash successfully saved to my /dev/nvme0n1p8 partition (that had LABEL "archive" and into /Sessions folder there, which was made automatically by following grub.cfg stanza (i.e. no need to create the savedir folder manually). Can change the setpart= to any labelled partition anywhere on your system (including into the usb stick if you wish)
NOTE2 that the isopath below is for iso in / directory of the partition. If in, say, /KLU-jam, change to 'set isopath=/KLU-jam/KLU-jam-XFCEbase-1.0.iso':
Code: Select all
menuentry "KLU-jam-XFCEbase-1.0.iso" {
echo "Booting ..."
set isopath=/KLU-jam-XFCEbase-1.0.iso
set distname=KLU-jam-XFCEbase
set revision=1.0
set savepart=archive
set savedir=Sessions
search --no-floppy --file --set=root $isopath
loopback loop $isopath
set root=(loop)
linux (loop)/vmlinuz w_bootfrom=$isopath w_changes=LABEL=${savepart}=/${savedir}/${distname}-${revision} w_changes1=RAM2
initrd (loop)/initrd.gz
}Note that if you haven't labelled any partition (or either way) you could alternatively use the UUID method such as:
Code: Select all
menuentry "KLU-jam-XFCEbase-1.0.iso" {
echo "Booting ..."
set isopath=/KLU-jam-XFCEbase-1.0.iso
set distname=KLU-jam-XFCEbase
set revision=1.0
set savedir=Sessions
search --no-floppy --file --set=root $isopath
loopback loop $isopath
set root=(loop)
linux (loop)/vmlinuz w_bootfrom=$isopath w_changes=UUID=7d34b88e-bc8e-4bb6-86cf-d619c3b545a9=/${savedir}/${distname}-${revision} w_changes1=RAM2
initrd (loop)/initrd.gz
}Use your own UUID where you want save folder to be of course.
NOTE3 therefore that no, you don't need Ventoy, or SDG2, or ISObooter3 for that matter; all you need to do is manually add stanza like the above to your typical grub2 set up. However, I think ISObooter3, if it provided this KL-variant grub2 stanza via its grub stanza construct script would be a nice convenience. Like Ventoy (or to a lesser extent SG2D) I presume you could then simply drop isos into a prepared location and boot them immediately without any manual intervention.
NOTE also that above doesn't really need that currently provided distname or revision in the stanza, but better to do so in case you want to boot from multiple different KL isos including these that are simply different revisions... That way alternative subdirs are used for each KL distro's upper_changes save folders (which is also the arrangement of KL distros for Ventoy use). i.e. avoids clash of different distro revision save folder location. Basically, all FR-based distros work fine with all typical modes when booted from iso per the above methodology.
