Change kernel boot parameters at livecd iso.

I need to add ‘toram’ boot parameter at livecd iso. Not during boot (not
manually). But as part of string in isolinux.cfg. How can I do it in
SuseStudio? Custom scripts applied to the appliance, before making iso.
So I can change boot parameters into /etc/default/grub, but can’t in

Or how can I modify ISO image (add parameter into isolinux.cfg manually)
and keep ISO bootable?

I tried genisoimage, xorriso, mkisofs … and images had been unbootable
(after I unpack-change-pack it again)


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I would actually also want to know this…

I have overlay files to big for the defailt ramdisk_size leading to boot failure of an ISO image; if you
change the ramdisk_size manually at boot it works but it would be nice to specify a different default.