Hello!
Will a customized /etc/mkinitcpio.conf be overwritten when a new kernel is installed? – Or is it “customize once, works forever”? Never having been so deep into a Linux, I may be simply lacking the right google-bait 
and that might be all the help needed.
Background: The plan is to use a custom hook(1) to have an overlayfs on the initramfs. That in turn would allow booting in an emergency on a read-only btrfs snapshot (otherwise, if stuff in /var can’t be written it causes problems(2) ). And read-only prevents accidentally damaging that safe fallback.
Backer ground: I am reading up on what to expect when I follow a tutorial(3) for an install “with btrfs-luks full disk encryption including /boot and auto-snapshots with Timeshift”, where the snapshots that will be created by grub-btrfs(4) are read-only. So far this looks good, but I need to know if said .conf will have to be restored frequently.
I am too new here, the respective links would be (replace XXXX with https):
(1) XXXX://github.com/Antynea/grub-btrfs/tree/master/initramfs
(2) example: XXXX://github.com/Antynea/grub-btrfs/issues/92
(3) XXXX://mutschler.eu/linux/install-guides/manjaro-btrfs/
(4) XXXX://github.com/Antynea/grub-btrfs/
Thanks for help, or the proper google search terms, or a pointer!
