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pythonsyntax
n00b
Joined: 30 Aug 2010
Posts: 14
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 Posted: Thu Sep 02, 2010 2:56 pm Post subject: grub Question |
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| How do i setup a grub with my kernel useing 1 OS? |
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Veldrin
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Joined: 27 Jul 2004
Posts: 1945
Location: Zurich, Switzerland
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| Posted: Thu Sep 02, 2010 3:08 pm Post subject: |
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Did you read Configureing Grub in the Handbook?
Or which part is not clear? |
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pythonsyntax
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Joined: 30 Aug 2010
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| Posted: Thu Sep 02, 2010 3:18 pm Post subject: |
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| I was useing the genkernel and not sure what to put in my grub file so the kernel will boot with just one Os? |
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disi
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Joined: 28 Nov 2003
Posts: 1354
Location: Out There ...
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| Posted: Thu Sep 02, 2010 3:29 pm Post subject: |
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that's from: http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=1&chap=10#doc_chap2
| Code Listing 2.4: grub.conf for genkernel users wrote: |
default 0
timeout 30
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title Gentoo Linux 2.6.34-r1
root (hd0,0)
kernel /boot/kernel-genkernel-x86-2.6.34-gentoo-r1 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/sda3
initrd /boot/initramfs-genkernel-x86-2.6.34-gentoo-r1 |
You still need to update the kernel and initramfs versions in the file. Also the name of the real_root partition
Default 0 tells grub to boot the first system listed as title
timeout 30 tells grub to wait 30 seconds before booting it
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pythonsyntax
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Joined: 30 Aug 2010
Posts: 14
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| Posted: Thu Sep 02, 2010 4:15 pm Post subject: |
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I get this
error 8: Kernel must be loaded before booting |
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disi
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Posts: 1354
Location: Out There ...
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| Posted: Thu Sep 02, 2010 5:03 pm Post subject: |
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| pythonsyntax wrote: | I get this
error 8: Kernel must be loaded before booting |
could you show us your current /boot/grub/grub.conf?
And:
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pythonsyntax
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Joined: 30 Aug 2010
Posts: 14
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| Posted: Sat Sep 04, 2010 4:15 pm Post subject: |
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| What i did was use the grub.conf what genkernel have for me and put the kernel what i was useing could that be the mistake i was makeing? |
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Hu
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Joined: 06 Mar 2007
Posts: 21706
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| Posted: Sat Sep 04, 2010 4:34 pm Post subject: |
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| pythonsyntax wrote: | | What i did was use the grub.conf what genkernel have for me and put the kernel what i was useing could that be the mistake i was makeing? |
Not all of us have a genkernel generated grub.conf, so this description is insufficient for us to understand what you are using. Please post the actual contents of your grub.conf as disi requested. |
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pythonsyntax
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Joined: 30 Aug 2010
Posts: 14
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| Posted: Sun Sep 12, 2010 6:21 pm Post subject: |
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default 0
timeout 30
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title Gentoo Linux 2.6.34-r6
root (hd0,0)
kernel /boot/kernel-genkernel-x86-2.6.34-gentoo-r6 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/sda3
initrd /boot/initramfs-genkernel-x86-2.6.34-gentoo-r6
i get this error
error 8: Kernel must be loaded before booting |
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Sun Sep 12, 2010 6:38 pm Post subject: |
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boot cd, run:
| Code: | mount /dev/sda3 /mnt/gentoo
mount /dev/sda1 /mnt/gentoo/boot
mount -t proc none /mnt/gentoo/proc
mount -o bind /dev /mnt/gentoo/dev
chroot /mnt/gentoo /bin/bash
env-update
source /etc/profile
export PS1="(chroot) $PS1"
emerge wgetpaste
fdisk -l | wgetpaste
ls - l | wgetpaste
lspci -k | wgetpaste
mount | wgetpaste
wgetpaste -s ca /usr/src/linux/.config
wgetpaste /etc/fstab
/boot/grub/grub.conf |
post the url's returned here |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54300
Location: 56N 3W
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| Posted: Sun Sep 12, 2010 6:46 pm Post subject: |
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pythonsyntax,
While you are on the liveCd, look in your chroot /boot and ensure you have a symlink that reads as It will be in cyan.
If its missing, | Code: | cd /boot
ln -s . boot |
You need the link for grub to find your kernel and initrd.
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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pythonsyntax
n00b
Joined: 30 Aug 2010
Posts: 14
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Sun Sep 12, 2010 8:01 pm Post subject: |
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i screwed this one up:
Please | Code: | | ls - l /boot | wgetpaste |
and post url |
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Sun Sep 12, 2010 8:16 pm Post subject: |
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BOOT ROOT SWAP need to be replaced with your values in /etc/fstab.
Not:
| Quote: | /dev/BOOT /boot ext2 noauto,noatime 1 2
/dev/ROOT / ext3 noatime 0 1
/dev/SWAP none swap sw 0 0
/dev/cdrom /mnt/cdrom auto noauto,ro 0 0
#/dev/fd0 /mnt/floppy auto noauto 0 0 |
But:
| Quote: | /dev/sda1 /boot ext2 noauto,noatime 1 2 # don't forget to "mount /boot" before working with grub and kernels
/dev/sda3 / ext3 noatime 0 1
/dev/sda2 none swap sw 0 0
#/dev/cdrom /mnt/cdrom auto noauto,ro 0 0 #Recommend letting automount work by commenting or removing cdrom line
#/dev/fd0 /mnt/floppy auto noauto 0 0 |
Still of interest from the chroot:
| Code: | ls -l /boot | wgetpaste
wgetpaste -s ca /usr/src/linux/.config |
Last edited by DONAHUE on Sun Sep 12, 2010 8:31 pm; edited 1 time in total |
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pythonsyntax
n00b
Joined: 30 Aug 2010
Posts: 14
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| Posted: Sun Sep 12, 2010 8:24 pm Post subject: |
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How do i do this?
/dev/sda1 /boot ext2 noauto,noatime 1 2 # don't forget to "mount /boot" before working with grub and kernels
/dev/sda3 / ext3 noatime 0 1
/dev/sda2 none swap sw 0 0
#/dev/cdrom /mnt/cdrom auto noauto,ro 0 0 #Recommend letting automount work by commenting or removing cdrom line
#/dev/fd0 /mnt/floppy auto noauto 0 0 |
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Sun Sep 12, 2010 8:29 pm Post subject: |
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quickest if not still in chroot:
boot cd
| Code: | mount /dev/sda3 /mnt/gentoo
nano /mnt/gentoo/etc/fstab |
make the changes, exit nano with <ctrl x>
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pythonsyntax
n00b
Joined: 30 Aug 2010
Posts: 14
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| Posted: Sun Sep 12, 2010 10:36 pm Post subject: |
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| what do i make change to? |
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Sun Sep 12, 2010 11:11 pm Post subject: |
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in the /etc/fstab file in your gentoo install.
you need to replace BOOT with sda1
you need to replace ROOT with sda3
you need to replace SWAP with sda2
if you don't want to use nano:
boot the cdboot cd, then run:
| Code: | mount /dev/sda3 /mnt/gentoo
echo "/dev/sda1 /boot ext2 noauto,noatime 1 2" > /mnt/gentoo/etc/fstab
echo "/dev/sda3 / ext3 noatime 0 1 " >> /mnt/gentoo/etc/fstab
echo "/dev/sda2 none swap sw 0 0" >> /mnt/gentoo/etc/fstab
reboot |
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pythonsyntax
n00b
Joined: 30 Aug 2010
Posts: 14
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| Posted: Mon Sep 13, 2010 12:17 am Post subject: |
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| I try that with out nano with livecd didn't work. |
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Mon Sep 13, 2010 12:38 am Post subject: |
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boot cd, run:
| Code: |
mount /dev/sda3 /mnt/gentoo
mount /dev/sda1 /mnt/gentoo/boot
mount -t proc none /mnt/gentoo/proc
mount -o bind /dev /mnt/gentoo/dev
chroot /mnt/gentoo /bin/bash
env-update
source /etc/profile
export PS1="(chroot) $PS1"
ls - l /boot | wgetpaste
wgetpaste -s ca /usr/src/linux/.config
wgetpaste /etc/fstab
ln -s /boot /boot
ln -s /boot/grub/grub.conf /boot/grub/menu.lst
reboot |
post the url's returned here |
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pythonsyntax
n00b
Joined: 30 Aug 2010
Posts: 14
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| Posted: Wed Sep 15, 2010 4:44 pm Post subject: |
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| Mayb i just start over and maybe fix it that way.any differnt step i need to take? |
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Wed Sep 15, 2010 5:15 pm Post subject: |
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Fix /etc/fstab in the gentoo install replacing BOOT ROOT SWAP with the device names for your gentoo partitions: /dev/sda1 /dev/sda3 /dev/sda2 . This is necessary even though the etc/fstab errors are not likely to be the cause of the grub error 8. To evaluate the grub error please provide info as requested below:
boot cd, run:
| Code: |
mount /dev/sda3 /mnt/gentoo
mount /dev/sda1 /mnt/gentoo/boot
mount -t proc none /mnt/gentoo/proc
mount -o bind /dev /mnt/gentoo/dev
chroot /mnt/gentoo /bin/bash
env-update
source /etc/profile
export PS1="(chroot) $PS1"
ls - l /boot | wgetpaste
wgetpaste -s ca /usr/src/linux/.config
wgetpaste /etc/fstab
ln -s /boot /boot
ln -s /boot/grub/grub.conf /boot/grub/menu.lst
reboot |
post the url's returned here |
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Thu Sep 16, 2010 3:10 am Post subject: |
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@jiuding
Are you also getting grub's | Quote: | | error 8: Kernel must be loaded before booting |
or some other grub error?
If so:
Boot the cd, run: | Code: | mount /dev/sda3 /mnt/gentoo
mount /dev/sda1 /mnt/gentoo/boot
cd /mnt/gentoo/boot
ls -l boot |
If the output does not contain the symbolic link run to make it. Then run: If the output does not contain the symbolic link | Quote: | | menu.lst ->grub.conf |
run | Code: | | ln -s grub.conf menu.lst |
to make it. Then continue by running: | Code: | mount -t proc none /mnt/gentoo/proc
mount -o bind /dev /mnt/gentoo/dev
chroot /mnt/gentoo /bin/bash
env-update
source /etc/profile
export PS1="(chroot) $PS1"
emerge wgetpaste
fdisk -l | wgetpaste
ls - l | wgetpaste
lspci -k | wgetpaste
mount | wgetpaste
wgetpaste -s ca /usr/src/linux/.config
wgetpaste /etc/fstab
/boot/grub/grub.conf |
post the url's that are returned.
If not error 8, what problem are you getting? |
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Installing Gentoo
