How do you edit the grub menu by hand? [Solved]

[siamhie]

OK, thanks.
The picture got now a bit clearer.
So what you want, is disable generation of grub menu entries, and have your own. OK fine.
And you would need manually adjust the grub menu after every kernel upgrade, or removal
Probably one way to go, but that not what I would recommend in general to do.
Anyway, good luck.

My days of chasing/experimenting with the latest kernels are done. I'm sticking with the LTS kernels (Xanmod-6.6 and Debian-6.1).
If either of those kernels have an update, I can always re-enable the executable flag for 10_linux and 30_os-prober and copy the
entry found in the grub.cfg file and apply it to the 09_custom file.

I'll go ahead and mark what I did in post #28 as solved.

[siamhie]

To avoid a potential issue, with booting into latest installed kernel,
e.g. just after kernel upgrade, and you missed manually adjusting the grub menu:
You may try this menuentry, potentially to be put on top,
e.g. as an example for fluxbox:

Code: Select all

menuentry 'Fluxbox latest kernel installed' --class fluxbox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-latest-installed-init-systemd-20cfcd8f-3e81-49d4-a5f4-35784be52c3f' {
	load_video
	insmod gzio
	if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
	insmod part_gpt
	insmod ext2
	search --no-floppy --fs-uuid --set=root 20cfcd8f-3e81-49d4-a5f4-35784be52c3f
	echo	'Loading Linux latest installed ...'
	linux	/vmlinuz root=UUID=20cfcd8f-3e81-49d4-a5f4-35784be52c3f ro  quiet init=/lib/systemd/systemd
	echo	'Loading initial ramdisk ...'
	initrd	/initrd.img
}

The difference is , latest kernel installation creates alway two symlinks /vmlinuz and /initrd.img:
E.g in the example above as:

Code: Select all

/vmlinux  -> boot/vmlinuz-6.6.63-x64v3-xanmod1
/initrd.img -> boot/initrd.img-6.6.63-x64v3-xanmod1

As those symlinks are relative symlinks, you can use it as booting into latest installed.
Similar would be, /vmlinuz.old and /initrd.img.old pointing to the one which was previous the latest.

Seems you have responded before I could publish post #31.

[fehlix]

Seems you have responded before I could publish post #31.

So at least you now have a fallback in case you missed to adjust the grub menu manually.

[siamhie]

Seems you have responded before I could publish post #31.

So at least you now have a fallback in case you missed to adjust the grub menu manually.

Yes. Always have a backup and then have a backup for that backup.

[siamhie]

@fehlix Wanted to give you an update on adding kernels with my setup. What a breeze.

I re-enabled the executable flag for the /etc/grub.d/10_linux file.
Installed the Liquorix kernel from the repos. Let the installation update grub.
Copy the (systemd) Liquorix entry from grub.cfg to my /etc/grub.d/09_custom file.
Disable the executable flag for the /etc/grub.d/10_linux file.
Ran sudo update-grub.

mxbo.png

[asqwerth]

Nice work!

[siamhie]

Nice work!

Thanks @asqwerth
Between you and @fehlix bouncing ideas around, I think I have a handle now on customizing grub.

I still miss the simple days of LILO.