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Andrey Grozin
n00b
Joined: 12 Nov 2015
Posts: 9
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 Posted: Sun Oct 06, 2024 5:26 pm Post subject: A problem with efibootmgr |
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For a long time, I use efistub kernels. The last one was gentoo-sources-5.6.14. Finally, I've compiled 6.11.1 and copied bzImage (as I always did) to /boot/EFI/Gentoo.
My /boot is mounted on /dev/sda2.
| Code: | bilbo ~ # ls /boot/EFI/Gentoo/
bzImage-5.16.14.efi bzImage-6.11.1.efi
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Then I did, as instructed,
| Code: | bilbo ~ # efibootmgr -c -L "Gentoo-6.11.1" -l '\EFI\Gentoo\bzImage-6.11.1.efi'
BootCurrent: 0001
Timeout: 0 seconds
BootOrder: 0002,0001,0000
Boot0000* Windows Boot Manager HD(2,GPT,d1c57d7e-f924-4f83-a1d7-3868b3e2cff4,0xe1800,0x32000)/\EFI\MICROSOFT\BOOT\BOOTMGFW.EFI57494e444f5753000100000088000000780000004200430044004f0042004a004500430054003d007b00390064006500610038003600
320063002d0035006300640064002d0034006500370030002d0061006300630031002d006600330032006200330034003400640034003700390035007d00000000000100000010000000040000007fff0400
Boot0001* Gentoo-5.16.14 HD(2,GPT,d1c57d7e-f924-4f83-a1d7-3868b3e2cff4,0xe1800,0x32000)/\EFI\GENTOO\BZIMAGE-5.16.14.EFI
Boot0002* Gentoo-6.11.1 HD(1,GPT,89656b86-936e-4711-9832-038a280be148,0x800,0xe1000)/\EFI\Gentoo\bzImage-6.11.1.efi
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But why Boot0002 looks different? Why HD(1,GPT,89656b86-936e-4711-9832-038a280be148,0x800,0xe1000) instead of HD(2,GPT,d1c57d7e-f924-4f83-a1d7-3868b3e2cff4,0xe1800,0x32000)? The files bzImage-6.11.1.efi and bzImage-5.16.14.efi are in the same directory.
OK, rebooting, pressing F2, then F8 to get to the boot menu. In the boot menu I see only 2 items:
- Windows boot manager
- Gentoo-5.16.14
There is no Gentoo-6.11.1. And
| Code: | bilbo ~ # efibootmgr
BootCurrent: 0001
Timeout: 0 seconds
BootOrder: 0001,0000,0002
Boot0000* Windows Boot Manager HD(2,GPT,d1c57d7e-f924-4f83-a1d7-3868b3e2cff4,0xe1800,0x32000)/\EFI\MICROSOFT\BOOT\BOOTMGFW.EFI57494e444f5753000100000088000000780000004200430044004f0042004a004500430054003d007b00390064006500610038003600320063002d00350063006400
64002d0034006500370030002d0061006300630031002d006600330032006200330034003400640034003700390035007d00000000000100000010000000040000007fff0400
Boot0001* Gentoo-5.16.14 HD(2,GPT,d1c57d7e-f924-4f83-a1d7-3868b3e2cff4,0xe1800,0x32000)/\EFI\GENTOO\BZIMAGE-5.16.14.EFI
Boot0002* Gentoo-6.11.1 VenHw(99e275e7-75a0-4b37-a2e6-c5385e6c00cb)
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I.e., Boot0002 is some abracadabra instead of the efistub kernel /boot/EFI/Gentoo/bzImage-6.11.1.efi which I put there by the command efibootmgr before the reboot.
Any ideas how to fix this?
Moderator note: Fixed long lines. -- Banana |
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pietinger
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Joined: 17 Oct 2006
Posts: 5167
Location: Bavaria
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Child_of_Sun_24
l33t
Joined: 28 Jul 2004
Posts: 602
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| Posted: Mon Oct 07, 2024 7:36 am Post subject: |
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| I have the problem that when two efi entries are in the same directory, my uefi firmware deletes one of it. So i have to use another directory for each entry, maybe it's the same for you. |
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Andrey Grozin
n00b
Joined: 12 Nov 2015
Posts: 9
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| Posted: Mon Oct 07, 2024 1:50 pm Post subject: |
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| pietinger wrote: | I guess your ESP is the 2nd partition of your disk (*) ... and you forgot to use parameter "-p 2" when you created your UEFI entry.
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Yes, you are right, of course. I did this sequence of action years ago, and so now I forgot that I have to include the -p parameter.
Now everything works.
A good idea! Next time I'll use it. |
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logrusx
Advocate
Joined: 22 Feb 2018
Posts: 2464
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| Posted: Mon Oct 07, 2024 3:23 pm Post subject: |
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| pietinger wrote: | | I would suggest to NOT create a new entry every time; just have two (main and backup) entries and copy/move the kernels |
I use this almost since the beginning. I wanter to use EFI-stub kernels but it looked absurd to recreate the EFI menu entries every time so I settled on a common name for the kernel image and ever since I override it whenever I upgrade to a new kernel. My backup, as well as testing option is grub. Whenever I'm testing a new kernel I boot it from grub, when I decide it's enough, I move it to the EFI partiotion at that location with that name. As simple as that. At all times I have a bunch of old kernels in /boot which I can boot with grub in case of emergency.
Best Regards,
Georgi |
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