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Grub.conf help

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Grub.conf help, Need help editing grub

Delta_Echo	23 Apr, 2008 - 01:33 AM Post #1
D.I.C Regular Joined: 24 Oct, 2007 Posts: 304 My Contributions	I installed gentoo linux on my second hdd. I skipped the grub install step in the Amd64 Gentoo Handbook because i want to just use the bootloader on my Fedora install. But when i try to boot gentoo i get a grub error. This is my hdd info: CODE Disk /dev/sda: 320.0 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x1f1f1f1f Device Boot Start End Blocks Id System /dev/sda1 * 1 25 200781 83 Linux /dev/sda2 26 38913 312367860 8e Linux LVM Disk /dev/sdb: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x4b36bdea Device Boot Start End Blocks Id System /dev/sdb1 * 1 123 987966 83 Linux /dev/sdb2 124 246 987997+ 82 Linux swap / Solaris /dev/sdb3 247 19457 154312357+ 83 Linux Disk /dev/dm-0: 317.7 GB, 317726916608 bytes 255 heads, 63 sectors/track, 38628 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x00000000 Disk /dev/dm-0 doesn't contain a valid partition table Disk /dev/dm-1: 2080 MB, 2080374784 bytes 255 heads, 63 sectors/track, 252 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x30307800 Disk /dev/dm-1 doesn't contain a valid partition table This is my grub.conf: CODE # EDITED BY DELTA # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd1,0) # kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00 # initrd /initrd-version.img #boot=/dev/sdb default=0 timeout=5 splashimage=(hd1,0)/grub/splash.xpm.gz hiddenmenu title Fedora (2.6.24.4-64.fc8) root (hd1,0) kernel /vmlinuz-2.6.24.4-64.fc8 ro root=/dev/VolGroup00/LogVol00 initrd /initrd-2.6.24.4-64.fc8.img title Fedora (2.6.23.1-42.fc8) root (hd1,0) kernel /vmlinuz-2.6.23.1-42.fc8 ro root=/dev/VolGroup00/LogVol00 initrd /initrd-2.6.23.1-42.fc8.img title Gentoo (kernel-2.6.19-gentoo-r5) root (sd1,0) kernel /boot/kernel-2.6.19-gentoo-r5 root=/dev/sdb3 My gentoo install is located on /dev/sdb Is my grub.conf written correctly? Or is it something else? On alot of parts of the grub install i was confused by the options so i chose the default option whenever i didn't know what to do. Thanks guys.
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no2pencil	23 Apr, 2008 - 01:40 AM Post #2
Wet D.I.C. Joined: 10 May, 2007 Posts: 4,208 Thanked 15 times Dream Kudos: 2275 Expert In: Goofing Off My Contributions	QUOTE(Delta_Echo @ 23 Apr, 2008 - 04:33 AM) But when i try to boot gentoo i get a grub error. & what might that error be... so we know what to look for? Judging from the size of your partitions, I would assume that your root drive would be on the same partition as the kernel. CODE title Gentoo (kernel-2.6.19-gentoo-r5) root (sd3,0) kernel /boot/kernel-2.6.19-gentoo-r5 root=/dev/sdb3 How did you come up with the size of 123 anyhow? If you are going to make it that small, why have it anyway? I would just use sda1 as your root & sda2 for your swap.
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Delta_Echo	23 Apr, 2008 - 01:49 AM Post #3
D.I.C Regular Joined: 24 Oct, 2007 Posts: 304 My Contributions	123? Its the boot partition. I set it to 1g with fdisk. Guess i screwed up...... The gentoo handbook wanted me to set it to 32m i thought that was too small. Btw, what does the swap partition do? This post has been edited by Delta_Echo: 23 Apr, 2008 - 01:53 AM
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no2pencil	23 Apr, 2008 - 01:51 AM Post #4
Wet D.I.C. Joined: 10 May, 2007 Posts: 4,208 Thanked 15 times Dream Kudos: 2275 Expert In: Goofing Off My Contributions	1Gig would be 1024. http://www.linuxhq.com/guides/SAG/x885.html
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Delta_Echo	23 Apr, 2008 - 01:59 AM Post #5
D.I.C Regular Joined: 24 Oct, 2007 Posts: 304 My Contributions	Hmm...so i made a partition of 123kb......wow Anyway, the grub error is "23:Error while parsing number"
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no2pencil	23 Apr, 2008 - 02:06 AM Post #6
Wet D.I.C. Joined: 10 May, 2007 Posts: 4,208 Thanked 15 times Dream Kudos: 2275 Expert In: Goofing Off My Contributions	QUOTE grub does not speak 'sd0, sd1', etc. Instead it sees hard drives as hd0, hd1, etc. I found from doing a Google search on that error. http://www.linuxquestions.org/questions/li...-number-335563/
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Delta_Echo	23 Apr, 2008 - 02:15 AM Post #7
D.I.C Regular Joined: 24 Oct, 2007 Posts: 304 My Contributions	so sdb1 would be (hd2.0)? This post has been edited by Delta_Echo: 23 Apr, 2008 - 02:16 AM
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no2pencil	23 Apr, 2008 - 02:18 AM Post #8
Wet D.I.C. Joined: 10 May, 2007 Posts: 4,208 Thanked 15 times Dream Kudos: 2275 Expert In: Goofing Off My Contributions	sb1 would be hd0, since the bootable flag is set, according to your fdisk.
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Delta_Echo	23 Apr, 2008 - 02:21 AM Post #9
D.I.C Regular Joined: 24 Oct, 2007 Posts: 304 My Contributions	Hmm, i got it to boot...kinda I get this: No filesystem could mount root,tried: kernel panic-no syncing:VFS:unable to mount root fs on unknown-block(0,0) umm...wtf? any ideas? This is my new grub.conf: CODE # EDITED BY DELTA # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd1,0) # kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00 # initrd /initrd-version.img #boot=/dev/sdb default=0 timeout=5 splashimage=(hd1,0)/grub/splash.xpm.gz hiddenmenu title Fedora (2.6.24.4-64.fc8) root (hd1,0) kernel /vmlinuz-2.6.24.4-64.fc8 ro root=/dev/VolGroup00/LogVol00 initrd /initrd-2.6.24.4-64.fc8.img title Fedora (2.6.23.1-42.fc8) root (hd1,0) kernel /vmlinuz-2.6.23.1-42.fc8 ro root=/dev/VolGroup00/LogVol00 initrd /initrd-2.6.23.1-42.fc8.img title Gentoo (kernel-2.6.19-gentoo-r5) root (hd0,0) kernel /boot/kernel-2.6.19-gentoo-r5 root=/dev/sdb3 This post has been edited by Delta_Echo: 23 Apr, 2008 - 02:31 AM
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