Gentoo Archives: gentoo-user

From: Michael Hampicke <mh@××××.biz>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Change EFI to BIOS Boot
Date: Sat, 12 Apr 2014 11:07:13
Message-Id: 53491E51.1060705@hadt.biz
In Reply to: [gentoo-user] Change EFI to BIOS Boot by Facu Curti
1 Am 12.04.2014 12:45, schrieb Facu Curti:
2 > Hi all. First at all i apologize if my english is not enough.
3 > When I installed gentoo, I do that with UEFI, and gpt partitions. But
4 > right now, I tried to install XEN, and this not works with EFI. I cant
5 > wait until somebody fix this problem, So i'm thinking to change "EFI" to
6 > "BIOS" boot.
7 >
8 > So, I deleted the efi (/boot/efi) partition, edited make.conf, and deleted
9 > /etc/default/grub.
10 >
11 > After that, I made a new partition with bios_grub
12 > flag. As explained in [1]. And reinstalled grub2 (with new flags).
13 > But I can't boot. Anyway, I can boot from a live cd without
14 > efi, so the problem is not in bios.
15 >
16 > I can't find the problem. ¿Some ideas?
17 >
18 > parted -l /dev/sdb:
19 >
20 > Model: ATA KINGSTON SV300S3 (scsi)
21 > Disk /dev/sdb: 120GB
22 > Sector size (logical/physical): 512B/512B
23 > Partition Table: gpt
24 > Disk Flags:
25 >
26 > Numero Inicio Fin Tamaño Sistema de ficheros Nombre Banderas
27 > 1 1049kB 11,5MB 10,5MB bios_grub
28 > 2 58,7MB 24,8GB 24,7GB ext4 rootfs arranque
29 > 3 24,8GB 28,8GB 3999MB linux-swap(v1) swap
30 > 4 28,8GB 120GB 91,2GB ext4 home
31 >
32
33 looks good
34
35 > I made install with:
36 > grub2-install --target=i386-pc --recheck --debug /dev/sdb
37
38 Try booting from the live cd and chroot into your gentoo installation.
39 Reinstall grub from there
40
41
42
43 > grub2-mkconfig /boot/grub/grub.cfg
44 >
45
46 Is this a typo? The correct command is
47
48 grub2-mkconfig -o /boot/grub/grub.cfg

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Re: [gentoo-user] Change EFI to BIOS Boot Facu Curti <facu.curti@×××××.com>