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So I managed to get 14.1 installed on a UEFI box using LVM. So far so good. Not had a lot of time to get to it so the other day, I uninstalled sendmail, powered off and unplugged the SATA drive.
Today I tried to boot but forgot to plug in the drive. No biggie. Power off, replug and boot, right? But I start getting errors about rebooting and selecting proper boot device.
Investigation reveals that the drive is good, partitions appear to be good. Eventually I conclude that apparently the bios is supposed to keep boot entries and apparently mine has become lost.
From what I have read so far, efibootmgr can install one. But that is not anywhere I can see when I boot from the DVD. Does Slackware use something else or do I have to mount my partitions? Apparently some bioses, this can be done with a bcfg command but my uefi shell does not have this command.
I guess another important question is whether this can be prevented from happening again? It seems dumb to throw away config information simply because a drive was unplugged. This was a FM2-A55M-E33 motherboard if that helps.
I'll be updating this thread as I work out what's going on but helpful information provided would be much appreciated.
I have a gigabyte board that does this kind of stuff, which is annoying. Here's what I did to prevent such issues. There is a default boot location at '/EFI/boot/bootx64.efi' (/boot/efi/EFI/boot/bootx64.efi). Slackware installs elilo.efi to '/EFI/Slackware/elilo.efi' (/boot/efi/EFI/Slackware/elilo.efi). So you could just copy or move the 'Slackware' directory to 'boot' and rename 'elilo.efi' to 'bootx64.efi' and it should be able to boot without any registered boot options.