[pvagner]

More things related to my arch linux install media booting issue.
I have found out that when my TV is off I can successfully boot any arch linux image. I understand to most people here this won't be usefull but I have found this by accident. I have booted the system, blindly typed in
systemctl start sshd
and then change the root passwd.
I am blind so when I am installing the new system making sure I can get into it over SSH is the first thing I am doing so when needed I can poke around, try to fix audio related issues remotelly etc during the install.

It will be interesting to see whether I can make the installed system booting without issues with TV screen working.

Now I don't know how to make grub install here. I have found out partition sda12 already includes some grub vs syslinux hybrid configuration. Should I be tinkering with that or should I tread the whole SSD drive similar way to how I am used to do MBR like setups. By tinkering with that sda12 ESP partition is it likelly I can screw Chrome OS boot? Currently I am most afraid of breaking that so I will have to start from scratch. I do have base OS installed already I just need to find out how to make it boot.

Edit: Replacing /efi/boot/bootx64.efi on the sda12 with my own grub stub does not work. I am not experienced with this but I think there are some checks I am breaking by trying this.
Trying to install grub in the MBR like setup causes the same thing you have already discussed here. So I am trying to find out what to do next.