efibootmgr issues

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bammbamm808 · Post by **bammbamm808** » Mon Jan 10, 2022 5:33 am

So, I have managed to populate my /sys/firmware/efi/efivars by flipping my bios' nx bit back on. I can now see the variables both from the min install environment, outside of chroot, and inside. I then
'modprobe efivarfs'
'mount -o rw,remount /sys/firmware/efi/efivars'
and efibootmanager will show me correctly what my uefi boot entries are. I seem to be having issues getting my changes to stick. In the past, I only had to perform the above steps, less modprobing the efivarfs module to make the changes I wanted to my boot list. I have seen a ton of different examples online, regarding the efivars or efivarfs modules, bind mounting the efivars before, after, or both relative to chroot and have tried a variety of different things. Something has changed since my last usage of efibootmanager and I'm fishing for some suggestions to try next. Thanks.

acidrums4 · Post by **acidrums4** » Tue Jan 11, 2022 12:33 am

What command are you issuing exactly?

I had some efibootmgr issues recently, also it didn't lasted for the next login, until I added the -d parameter

bammbamm808 · Post by **bammbamm808** » Tue Jan 11, 2022 2:26 am

acidrums4 wrote:What command are you issuing exactly?

I had some efibootmgr issues recently, also it didn't lasted for the next login, until I added the -d parameter

Because my root=/= /dev/sda, I always have to use the -d parameter. That wasn't my issue.

Have found a method that works for my bios, anyway:
I modprobe either 'efivars' or 'efivarfs' before the chroot. After remount my efivars rw, I can then add, and presumably delete entries. I cannot, however change order by doing

'efibootmgr -o'

I must first nuke the order with

'efibootmgr -O'

Only then can I set an order that persist through a reboot.

I'm to the point of kernel panics and other problems which I must sort out now, but it's progres..