hot thread here ehehehe
Btw solved the problem. I have installed HASSOS on BIOS pc following advise listed this thread (at reply #30).
The system booted fine but OS updates does not completed correctly because the system continued to boot previous version.
Here the explanation from trevormcclellan at reply #65:
The reason HA does not boot to the latest version after an update is because the OS writes to the
/efi/boot/grubenvfile to update the environment, but the default location for load_env and save_env (used in the grub.cfg file) is/boot/grub/grubenv. Settingdefaultto 1 in grub.cfg will work, however, it bypasses HA’s failover method. (HA always has two versions installed at a time, one in SLOT A and one in SLOT B. If one version fails to boot after 3 tries, it will attempt to boot the other version).
Solved using complete guide by trevormcclellan at reply #71