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Fog_Watch
Apprentice
Joined: 24 Jul 2006
Posts: 267
Location: Utility Muffin Research Kitchen
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 Posted: Mon Jun 01, 2020 10:45 am Post subject: grubx64.efi, started from rEFInd, can't find its conf?SOLVED |
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I would like to boot an ISO from rEFInd. In the absence of me knowing how to do this I thought I'd travel via GRUB. That is: rEFInd -> GRUB -> SystemRescueCd.iso.
When I choose EFI/gentoo/grubx64.efi from rEFInd I end up at a GRUB prompt. It is as though EFI/gentoo/grub.conf does not exist, but it does.
At the GRUB prompt I can
| Code: | grub> configfile (hd0,gpt2)/efi/gentoo/grub.conf
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which returns a SystemRescue menu entry that can be selected and booted.
| Code: | grub> configfile (hd0,gpt6)/grub/grub.conf
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is similarly successful.
What can I do so that EFI/gentoo/grubx64.efi automatically finds its conf file?
example stanza from /boot/grub/grub.conf
| Code: | menuentry "SystemRescue" {
set isofile="sysresccd-20190617-2328.iso"
loopback loop (hd0,gpt8)/$isofile
linux (loop)/isolinux/rescue64 isoloop=$isofile rootpass=a setkmap=us
initrd (loop)/isolinux/initram.igz
}
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| Code: | # df | tail -n 2
/dev/sda6 99150 31634 62396 34% /boot
/dev/sda2 306584 128328 178256 42% /boot/efi
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| Code: | # gdisk -l /dev/sda | tail -n 11
1 2048 1230847 600.0 MiB 2700 Basic data partition
2 1230848 1845247 300.0 MiB EF00 EFI system partition
3 1845248 2107391 128.0 MiB 0C01 Microsoft reserved ...
4 223909888 250067631 12.5 GiB 2700 Basic data partition
5 2107392 74405887 34.5 GiB 0700 Basic data partition
6 74405888 74610687 100.0 MiB 8300 Boot
7 74610688 106067967 15.0 GiB 8200 Swap
8 106067968 127039487 10.0 GiB 8300 ISOs
9 127039488 127244287 100.0 MiB 8300 Spare
10 127244288 131438591 2.0 GiB 8300 Nothing
11 131438592 223909887 44.1 GiB 8E00 vg |
emerge --info
Last edited by Fog_Watch on Mon Jun 01, 2020 11:25 am; edited 1 time in total |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3879
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| Posted: Mon Jun 01, 2020 10:52 am Post subject: |
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Hi
it is not grub.conf.
It is rather grub.cfg
If you maybe run
| Code: |
grub-mkconfig -o /boot/efi/EFI/gentoo/grub.cfg
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it will create the grub.cfg file to which you can append your iso entry.
Why dont you you write the iso to a usb and use the usb to boot into the iso?
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Anon-E-moose
Watchman
Joined: 23 May 2008
Posts: 6102
Location: Dallas area
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| Posted: Mon Jun 01, 2020 11:05 am Post subject: |
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On the admin cd (which is a bios/uefi hybrid)
you have you EFI, boot and grub directories
| Code: | /mnt/iso $ ls -F
EFI/ README.txt boot/ gentoo.efimg grub/ image.squashfs isolinux/ livecd |
and within the grub dir is grub.cfg
| Code: | $ cat grub/grub.cfg
set default=0
set gfxpayload=keep
set timeout=10
insmod all_video
menuentry 'Boot LiveCD (kernel: gentoo)' --class gnu-linux --class os {
linux /boot/gentoo root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot
initrd /boot/gentoo.igz
}
menuentry 'Boot LiveCD (kernel: gentoo) (cached)' --class gnu-linux --class os {
linux /boot/gentoo root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot docache
initrd /boot/gentoo.igz
} |
_________________
PRIME x570-pro, 3700x, 6.1 zen kernel
gcc 13, profile 17.0 (custom bare multilib), openrc, wayland |
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Fog_Watch
Apprentice
Joined: 24 Jul 2006
Posts: 267
Location: Utility Muffin Research Kitchen
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| Posted: Mon Jun 01, 2020 11:24 am Post subject: |
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| alamahant wrote: | Hi
it is not grub.conf.
It is rather grub.cfg
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BINGO and dang.
| alamahant wrote: | | Why dont you you write the iso to a usb and use the usb to boot into the iso? |
I don't know, other than it can sometimes be quite nice to have the recovery ISO already bootable on disk. You don't have to go fossicking for a thumb drive.
Thanks everyone. |
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Installing Gentoo
