I have added on old WD80GB HDD to my machine and installed Antergos KDE on it. I’m using it for a backup device and I want to be able to boot from it from my main device’s grub menu.
The problem is after running
grub-mkconfig -o /boot/grub/grub.cfg
it finds the 2nd instance ok & it shows the entry in grub but selecting it just goes to a blank screen. I’ve seen it have a kernel panic too.
I know that efi nvram is a pain so I’ve made sure I re-installed grub to each drive (after booting from live usb and chrooting etc) with
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=Antergos-grub
and they both boot from the efi boot menu ok.
Does anyone know what is happening?
BTW I installed lsb-release coz os-prober was taking ages.