[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Unable to boot UEFI from 2.04
From: |
David Huffman |
Subject: |
Re: Unable to boot UEFI from 2.04 |
Date: |
Thu, 3 Dec 2020 09:13:20 -0800 |
I’ve changed the partition ID, but made no difference. I found that a different
kernel level was able to execute.
I am able to execute kernel 4.19.0-12-amd64 (debian 10.5), but am unable to
execute kernel 2.6.32-358.el6.x86_64 (RHEL 6.0). Is there a minimum Linux
kernel level supported with grub 2.04?
Thanks,
David
> On Dec 2, 2020, at 2:38 PM, Hanson Char <hanson.char@gmail.com> wrote:
>
> Seems you are missing an EFI System partition which is necessary for UEFI
> boot (EF00).
>
> FWIW, I’ve had success creating an EFI system partition using gdisk,
> building+installing grub 2.04 from source, and UEFI boot on both Debian and
> Centos.
>
> Regards,
> Hanson
>
>> On Dec 2, 2020, at 12:55 PM, David Huffman <dhuffmansd@gmail.com> wrote:
>>
>> I have built 2.04 from source (no errors). I have a script to create a
>> BIOS/UEFI bootable hard drive. The grub-install command I am running
>> succeeds without errors, but the kernel does not seem to execute when
>> booting from UEFI (BIOS is fine).
>>
>> Adding debug=all to the configuration file shows the execution stops at:
>> (...last three lines)
>>
>> diskefiefidisk.c:595: reading 0x40 sectors at sector 0x48dc0 from hd1
>> diskefiefidisk.c:595: reading 0x40 sectors at sector 0x48e00 from hd1
>> diskefiefidisk.c:595: reading 0x40 sectors at sector 0x48e40 from hd1
>>
>> If I use the grub /usr/lib/grub/x86_64-efi files (*.mod, kernel.img, etc)
>> poached from Debian 10.5, the system executes the kernel properly. If I just
>> swap out the x86_64-efi directory with the files I compiled, the kernel does
>> not execute. I am using the grub-install program I compiled from source in
>> both cases.The only difference are the files in lib/grub/x86_64-efi/.
>>
>> I have found references that linuxefi.mod was removed from grub and is a
>> “distro patch”. This module appears to be missing from by source build but
>> removing it from the debian grub files didn’t seem to make a difference.
>>
>> Here are the commands used to build:
>>
>> configure --with-platform=efi --target=x86_64 --disable-device-mapper
>> —prefix=$GRUBDIR
>> make
>> make install
>>
>> Inside $GRUBDIR I have all of the files I would expect from the build.
>>
>> The disk has three partitions with an msdos partition table:
>>
>> # sfdisk -l /dev/sdb
>>
>> Disk /dev/sdb: 1305 cylinders, 255 heads, 63 sectors/track
>> Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
>>
>> Device Boot Start End #cyls #blocks Id System
>> /dev/sdb1 * 0+ 12- 13- 102400 83 Linux
>> /dev/sdb2 12+ 25- 13- 102400 83 Linux
>> /dev/sdb3 25+ 1305- 1280- 10279936 83 Linux
>> /dev/sdb4 0 - 0 0 0 Empty
>>
>> /dev/sdb2 on /mnt type ext2 (rw)
>> /dev/sdb1 on /mnt/boot/EFI type vfat (rw)
>>
>> Here is the grub-install commands used:
>>
>> FOR BIOS:
>> grub-install —force --boot-directory=$TMPMNT/boot --target=i386-pc
>> —directory=$GRUBDIR/i386-pc /dev/sdb
>>
>> FOR UEFI
>> grub-install --removable --efi-directory=$TMPMNT/boot/EFI
>> --boot-directory=$TMPMNT/boot --target=x86_64-efi
>> --directory=$GRUBDIR/x86_64-efi /dev/sdb
>>
>> At this point I am not sure what else to look at to find out what is
>> different between the modules and kernel.img file I compile and what is
>> supplied with debian. Any assistance in tracking down the problem would be
>> appreciated.
>>
>>
>> - David
>>
>>
>>
>
- Unable to boot UEFI from 2.04, David Huffman, 2020/12/02
- Re: Unable to boot UEFI from 2.04, Hanson Char, 2020/12/02
- Re: Unable to boot UEFI from 2.04,
David Huffman <=
- Re: Unable to boot UEFI from 2.04, Hanson Char, 2020/12/03
- Re: Unable to boot UEFI from 2.04, David Huffman, 2020/12/03
- Re: Unable to boot UEFI from 2.04, David Huffman, 2020/12/03
- Re: Unable to boot UEFI from 2.04, David Huffman, 2020/12/03
- Re: Unable to boot UEFI from 2.04, g . lip, 2020/12/04
- Re: Unable to boot UEFI from 2.04, Andrei Borzenkov, 2020/12/04
- Re: Unable to boot UEFI from 2.04, David Huffman, 2020/12/04