I have a Thinkpad T470p which is equipped with two SSDs. Archlinux is
installed on one drive and Qubes on the other. I use the UEFI Boot Menu
to switch between operating systems without using multi-boot from a boot
manager. Qubes 4.0 runs very well on this machine.
Since the T470p is now supported by the Linux Firmware Vendor Service I
did the last BIOS update from Archlinux using fwupdmgr. Everything went
smoothly. Unfortunately, after the update I was no longer able to boot
Qubes because the UEFI boot configuration for the second drive was
somehow deleted.
How can one recover the UEFI boot environment of Qubes 4.0? I tried
using the Qubes installer but there is no shell access to run
grub-install or efibootmgr. Can I do it from the Archlinux drive or a
Fedora boot media?
Any hints are appreciated.
Regards,
Stephan
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