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contraversy n00b
Joined: 28 Apr 2012 Posts: 39
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Posted: Fri Nov 09, 2012 6:43 am Post subject: amd64 install boots straight to grub prompt |
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Ok I have two machines, On one I did the x86 minimal install from the handbook and it worked flawlessly. On the machine im trying the amd64 install though, I followed the handbook but when I boot this machine it doesnt show the grub loader, just goes straight to the grub prompt?
If I set the kernel to /boot/kernel and initrd to /boot/initramfs and do 'boot' it will start but will panic shortly after.
I have searched and found similar issues but my grub.conf looks the same as most that I find!
/etc/fstab
Code: | /dev/sda1 /boot ext2 defaults,noatime 0 2
/dev/sda2 none swap sw 0 0
/dev/sda3 / ext3 noatime 0 1
/dev/cdrom /mnt/cdrom auto noauto,user 0 0
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/boot/grub/grub.conf
Code: | default 0
timeout 30
title Gentoo
root (hd0,0)
kernel /boot/kernel real_root=/dev/sda3
initrd /boot/initramfs
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One thing is weird, when I tried to compare my grub.conf to the working machine, it no longer has a /boot/grub folder, but I still have grub at boot and /sbin/grub
Any help will be greatly appreciated! |
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jrussia Tux's lil' helper
Joined: 29 Aug 2012 Posts: 89 Location: Chicago
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Posted: Fri Nov 09, 2012 3:54 pm Post subject: |
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Ah.. well based on my experience using amd64 rather than x86, there were a few more bumps in the road for amd64, including mount and grub. In particular I had a problem similar to yours, and what was happening was that it was mounting my /boot as "ro". I didn't notice it right off, and I tried adding a grub.conf without noticing that it wasn't actually writing to the drive.
So, I would check some basics. How is your drive mounted? Does re-emerging grub give notices about the disk being read-only?
In the end all I had to do was mount it "rw", re-add grub.conf and continue on.
Hope it helps. |
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DONAHUE Watchman
Joined: 09 Dec 2006 Posts: 7651 Location: Goose Creek SC
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Posted: Fri Nov 09, 2012 4:23 pm Post subject: |
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on the machine that fails to boot:
boot the cd, mount the gentoo partitions, enter the chroot, nominally: Quote: | mount /dev/sda3 /mnt/gentoo
mount /dev/sda1 /mnt/gentoo/boot
cp /etc/resolv.conf /mnt/gentoo/etc/resolv.conf
mount -t proc none /mnt/gentoo/proc
mount --rbind /sys /mnt/gentoo/sys
mount --rbind /dev /mnt/gentoo/dev
chroot /mnt/gentoo /bin/bash
env-update
source /etc/profile
export PS1="(chroot) $PS1" | When in the chroot: Code: | emerge wgetpaste pciutils gentoolkit grub
ls -l /boot | wgetpaste
wgetpaste /etc/fstab
wgetpaste /boot/grub/grub.conf
lspci -k | wgetpaste
wgetpaste /usr/src/linux/.config
wgetpaste /proc/cpuinfo | post the url's returned. Then Code: | nano /boot/grub/grub.conf | Edit to: Quote: | default 0
timeout 30
title Gentoo
root (hd0,0)
kernel /boot/kernel real_root=/dev/sda3
initrd /boot/initramfs | Then: Code: | grub
find /boot/grub/stage2 | this should return an answer in the form (hdx,y)where x,y are the values returned in the last step; return will look like "Filesystem type is ext2, partition type 0x83". then return should look like " Checking if "/boot/grub/stage1" exists... yes
Checking if "/boot/grub/stage2" exists... yes
Checking if "/boot/grub/ext2_stage1_5" exists... yes
Running "embed /boot/grub/ext2_stage1_5 (hd0)"... 19 sectors are embedded
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succeeded
Running "install /boot/grub/stage1 (hd0) (hd0)1+19 p (hd0,1)/boot/grub/stage2
/boot/grub/menu.lst"... succeeded
Done." Then Reboot to the installed system
If/when a panic occurs take a cell phone or digicam picture and post on a free photo site; post url here.
Guessing you were not in the chroot when you emerged grub. _________________ Defund the FCC. |
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