Hi
I think OP wants to use things from another distro here? So
I need to use GRUB_CMDLINE_LINUX and GRUB_CMDLINE_LINUX_DEFAULT for TCL
post what you want to have on those lines and we convert them to lines, phrases, terms etc to use on TC in your current grub.cfg.
Here is an example from my Debian that we can make TC
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
right so we just add it your linux line.
eg
linux /boot/vmlinuz64 quiet lst=14.lst home=sda3 opt=sda3 tce=sda3 LANG=en_AU.UTF.8
and bonus, as we have grub.cfg that is raw and not generated from /etc/grub.d, no need to run update-grub