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Red Knuckles
n00b
Joined: 12 Jan 2007
Posts: 32
Location: Colorado, USA
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 Posted: Thu Aug 16, 2007 11:05 pm Post subject: kernel-2.6.22-gentoo-r3 won't boot SOLVED! |
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I just did a kernel upgrade using genkernel and the new kernel won't boot. I THINK this is a kernel problem not a grub problem because the old kernel, installed and configured the same way with identical '/boot/grub/menu.lst' settings, still boots fine. Here's how I do a kernel upgrade:
| Code: | # eix-sync
# emerge genkernel gentoo-sources
# eselect kernel list
# eselect kernel set x [where x=# of desired new kernel in list]
# zcat /proc/config.gz > /usr/src/linux/config
# genkernel --kernel-config=/usr/src/linux/config --menuconfig --bootloader=grub --gensplash=splash.xpm.gz all
# modules-rebuild rebuild |
Then add 'vga=791 splash=verbose,theme:splash.xpm.gz CONSOLE=/dev/tty1 quiet' to newly created [by genkernel] entry in 'boot/grub/menu.lst'. This latest time [never happened before and I'm on my 3rd kernel update] when I reboot into the new kernel grub gives:
Booting 'Gentoo Linux (2.6.22-gentoo-r3)
root (hd0,0)
Filesystem is ext2fs, partition type 0x83
Kernel /boot/vmlinuz-2.6.22-gentoo-r3 root=/dev/hda3
Error 15: File not found
Here's '/boot/grub/menu.lst':
| Code: | default 0
timeout 10
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title=Gentoo Linux (2.6.22-gentoo-r3)
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-gentoo-r3 vga=791 splash=verbose,theme:splash.xpm.gz CONSOLE=/dev/tty1 quiet root=/dev/hda3
title=Gentoo Linux (2.6.22-gentoo-r2)
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-gentoo-r2 vga=791 splash=verbose,theme:splash.xpm.gz CONSOLE=/dev/tty1 quiet root=/dev/hda3 |
I think this means grub isn't recognizing my root partition or isn't recognizing the newly installed kernel version. I'm wondering what have I done wrong?  Or did genkernel do something wrong?  Is this a bug? Did I use ' correctly in this post?  Do I possibly need to purge gentoo-sources and remove some files and reinstall and configure kernel?
I've been using Linux for 3 to 4 years but this is my 2nd week in Gentoo so I recognize I have a lot to learn here. From what I've seen so far this is a GREAT distro for REALLY learning Linux and when you get you're own install set you'll have a lean,mean, high performance, and stable distro.  
_________________
Gentoo 2007.0 AMD64:AMD64 X2 4800+:4x1GB DDR2 800:GeForce 6150 256MB:ASUS M2NPV-VM:2x320GB
Last edited by Red Knuckles on Sat Aug 25, 2007 4:56 pm; edited 2 times in total |
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rsa4046
l33t
Joined: 07 Feb 2005
Posts: 660
Location: The Big H, a bit SSW
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| Posted: Thu Aug 16, 2007 11:46 pm Post subject: |
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This usually means grub just can't find the file. Are you absolutely certain the kernel image | Code: | | vmlinuz-2.6.22-gentoo-r3 |
is actually in /boot ? Boot the working kernel, mount /dev/hda1 and verify the actual filename spelling versus the grub entry.
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I love gentoo, but I am certainly no guru, despite what it says above. |
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Red Knuckles
n00b
Joined: 12 Jan 2007
Posts: 32
Location: Colorado, USA
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| Posted: Sat Aug 18, 2007 12:55 pm Post subject: |
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| rsa4046 wrote: | This usually means grub just can't find the file. Are you absolutely certain the kernel image | Code: | | vmlinuz-2.6.22-gentoo-r3 |
is actually in /boot ? Boot the working kernel, mount /dev/hda1 and verify the actual filename spelling versus the grub entry. |
I'm not sure exactly how to verify. Here's /boot which is /dev/hda1:
| Code: |
boot # ls
System.map initramfs-genkernel-x86_64-2.6.20-gentoo-r8
System.map-2.6.22-gentoo-r2 initramfs-genkernel-x86_64-2.6.21-gentoo-r4
System.map-genkernel-x86_64-2.6.20-gentoo-r8 initramfs-genkernel-x86_64-2.6.22-gentoo-r2
System.map-genkernel-x86_64-2.6.21-gentoo-r4 initramfs-genkernel-x86_64-2.6.22-gentoo-r3
System.map-genkernel-x86_64-2.6.22-gentoo-r2 kernel
System.map-genkernel-x86_64-2.6.22-gentoo-r3 kernel-genkernel-x86_64-2.6.20-gentoo-r8
System.map.old kernel-genkernel-x86_64-2.6.21-gentoo-r4
boot kernel-genkernel-x86_64-2.6.22-gentoo-r2
config kernel-genkernel-x86_64-2.6.22-gentoo-r3
config-2.6.22-gentoo-r2 lost+found
config.old vmlinuz
grub vmlinuz-2.6.22-gentoo-r2
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Of the 4 listed kernels only '2.6.22-gentoo-r2' will boot. So if I'm configuring new kernel with genkernel as described above why would I not be creating a new 'vmlinuz' as well? I must be missing something. A new kernel revision is out today, '2.6.22-gentoo-r4. I'm going to go to handbook and see if I can figure out how to remove redundant kernels and then update to the latest one. I don't see a need for more than 2 anyway.
_________________
Gentoo 2007.0 AMD64:AMD64 X2 4800+:4x1GB DDR2 800:GeForce 6150 256MB:ASUS M2NPV-VM:2x320GB
Last edited by Red Knuckles on Sat Aug 18, 2007 3:21 pm; edited 1 time in total |
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Red Knuckles
n00b
Joined: 12 Jan 2007
Posts: 32
Location: Colorado, USA
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| Posted: Sat Aug 18, 2007 3:19 pm Post subject: |
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Ok, nothing like a little Saturday morning training and education. I wasn't booting in to my genkernel config of '2.6.22-gentoo-r2' in the first place. Obviously at some point I had done a manual config of that kernel [using the Gentoo wiki I remember now] and that was what was booting and why none of the other /boot/grub/menu.lst' entries at that time would boot. Genkernel for some reason kept creating a '/boot/vmlinuz-<kernel version>' entry which won't boot into the genkernel created kernel. The correct entry for me in '/boot/grub/menu.lst' for genkernel kernels is:
| Code: |
title=Gentoo Linux (2.6.22-gentoo-r4)
root (hd0,0)
kernel /boot/kernel-genkernel-x86_64-2.6.22-gentoo-r4 vga=791 splash=verbose,theme:splash.xpm.gz CONSOLE=/dev/tty1 quiet root=/dev/hda3
title=Gentoo Linux (2.6.22-gentoo-r2)
root (hd0,0)
kernel /boot/kernel-genkernel-x86_64-2.6.22-gentoo-r2 vga=791 splash=verbose,theme:splash.xpm.gz CONSOLE=/dev/tty1 quiet root=/dev/hda3
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Now I have 2 bootable kernel versions configured to my specs by genkernel and I also learned how to remove old kernel versions and their redundant files. Got something to work like I want it and eliminated unnecessary files in the process.
_________________
Gentoo 2007.0 AMD64:AMD64 X2 4800+:4x1GB DDR2 800:GeForce 6150 256MB:ASUS M2NPV-VM:2x320GB |
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Kernel & Hardware
