Install HA on old laptop without UEFI

Configuration
60

I figuret out how to do this proces manualy.

  1. I run ha os from slot a
  2. when ha os is up and runing i ran command: ha os update from cli
  3. when update complete ha os goes to restart
  4. when pc starts I first boot to some linux and mount sda1 with command: mount /dev/sda1 /mnt
  5. then I edit /efi/boot/grub.cfg with command nano /mnt/efi/boot/grub.cfg end I changed default=99 to default=1 to get more time to select slot b
  6. then umount mounted sda1 with command umount /mnt type reboot to restart pc
  7. on system boot select slot b and wait system to complete

I am now on latest version of ha os with all stuff working.

Home Assistant 2023.4.6
Supervisor 2023.04.0
Operating System 10.0
Frontend 20230411.1 - latest

Error in cli si still presented: /dev/sda1 can’t open blockdev

After that do not try to boot from slot a, if you try that you are back on begining!!!

In future will bi great if someone figure out how to automate this process, so that people with old computers and non-uefi bios update ha os without unnecessary difficulty.