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curmudgeon
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PostPosted: Thu Jan 03, 2019 1:49 am    Post subject: configuring grub [SOLVED] Reply with quote

First time installing with gpt (still using bios, though :) ).

I quote from https://wiki.gentoo.org/wiki/GRUB2

Quote:
When using a BIOS-based system, set GRUB_PLATFORMS variable to pc to avoid unneeded dependencies.


That does not work.

Code:

# grub-install /dev/sda
grub-install: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist. Please specify --target or --directory.


# ls /usr/lib/grub/
i386-pc/


Partition table begins (sda2 is boot and sda4 is /):

Code:

Device         Start       End   Sectors   Size Type
/dev/sda1       2048      8191      6144     3M BIOS boot
/dev/sda2       8192    131071    122880    60M Linux filesystem
/dev/sda3     131072   8388607   8257536     4G Linux swap
/dev/sda4    8388608  41943039  33554432    16G Linux filesystem


Is the directive on the wiki page incorrect, or am I doing something wrong?


Last edited by curmudgeon on Fri Jan 04, 2019 6:18 am; edited 1 time in total
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Marlo
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PostPosted: Thu Jan 03, 2019 7:56 am    Post subject: Reply with quote

Code:
  grub-install --grub-setup=/bin/true /dev/sda


Control of the installation.--> "020" is expected,
Code:
 hexdump -v -s 0x80 -n  2 -e '2/1 "%x" "\n"'  /dev/sda


if not
Code:
 grub-install --recheck /dev/sda

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curmudgeon
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PostPosted: Thu Jan 03, 2019 8:42 am    Post subject: Reply with quote

Quote:

Code:
grub-install --grub-setup=/bin/true /dev/sda



Code:

# grub-install --grub-setup=/bin/true /dev/sda
grub-install: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist. Please specify --target or --directory.


Quote:

Code:
 hexdump -v -s 0x80 -n  2 -e '2/1 "%x" "\n"'  /dev/sda



Code:

# hexdump -v -s 0x80 -n  2 -e '2/1 "%x" "\n"' /dev/sda
00


Quote:

Code:
 grub-install --recheck /dev/sda



Code:

# grub-install --recheck /dev/sda
grub-install: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist. Please specify --target or --directory.
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Marlo
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PostPosted: Thu Jan 03, 2019 8:54 am    Post subject: Reply with quote

curmudgeon,
that seems strange to me.

Can you please post the result of:
Code:
 emerge grub -pv

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curmudgeon
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PostPosted: Thu Jan 03, 2019 10:57 pm    Post subject: Reply with quote

Marlo wrote:

Can you please post the result of:
Code:
 emerge grub -pv



Sure.

Code:

# emerge -pv grub

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R    ] sys-boot/grub-2.02-r1:2/2.02-r1::gentoo  USE="device-mapper nls sdl -debug -doc -efiemu -fonts -libzfs -mount -multislot -static (-test) -themes -truetype" GRUB_PLATFORMS="pc -coreboot -efi-32 -efi-64 -emu -ieee1275 -loongson -multiboot -qemu -qemu-mips -uboot -xen -xen-32" 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB
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Marlo
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PostPosted: Fri Jan 04, 2019 12:47 am    Post subject: Reply with quote

Thanks, curmudgeon,

I have 2 additional USE enabled in my installation.
Code:

fonts           Build and install fonts for the gfxterm module
mount           Build and install the grub-mount utility


Otherwise, everything is the same.
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curmudgeon
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PostPosted: Fri Jan 04, 2019 6:17 am    Post subject: Reply with quote

Marlo wrote:

I have 2 additional USE enabled in my installation.
Code:

fonts           Build and install fonts for the gfxterm module
mount           Build and install the grub-mount utility


Otherwise, everything is the same.


I knew those can't be required.

Went back to the wiki page, and saw:

Quote:

grub-install accepts a --target option to set the CPU architecture and system platform. If unspecified, grub-install will attempt to guess the correct values; on an amd64/x86 system it will use i386-pc by default.


So I tried:

Code:

# grub-install --target=i386-pc /dev/sda


And that came back:

Code:

Installing for i386-pc platform.
Installation finished. No error reported.


No guarantee that it boots, but at least it is progress.
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Marlo
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PostPosted: Fri Jan 04, 2019 7:50 am    Post subject: Reply with quote

yes, reading is always good. :D
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pamela
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PostPosted: Mon Jan 07, 2019 5:15 am    Post subject: Reply with quote

curmudgeon wrote:
Marlo wrote:

I have 2 additional USE enabled in my installation.
Code:

fonts           Build and install fonts for the gfxterm module
mount           Build and install the grub-mount utility


Otherwise, everything is the same.


I knew those can't be required.

Went back to the wiki page, and saw:

Quote:

grub-install accepts a --target option to set the CPU architecture and system platform. If unspecified, grub-install will attempt to guess the correct values; on an amd64/x86 system it will use i386-pc by default.


So I tried:

Code:

# grub-install --target=i386-pc /dev/sda


And that came back:

Code:

Installing for i386-pc platform.
Installation finished. No error reported.


No guarantee that it boots, but at least it is progress.


Surely I miss this wiki section, thanks for the post.
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ctylin
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PostPosted: Tue Jan 15, 2019 6:23 pm    Post subject: Reply with quote

Very helpful don't know what to do if I didn't find this post. Thanks!
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