Grub Error Collection [Part 4]

Gentoo Bob · Posted: Tue Apr 11, 2006 4:48 pm Post subject: I solved your problem

Dude, stay with grub its such a great bootloader. Your issue is this....

change this line: kernel /boot/kernel-2.6.15-gentoo-r5 root=/dev/hda3

to this line: kernel /boot/linux-2.6.15-gentoo-r5 root=/dev/hda3

that is why you are not booting to your kernel. your kernel name is linux-2.6.15-gentoo-r5

not kernel-2.6. blah blah. :lol:

swooshOnLn · Posted: Tue Apr 11, 2006 5:24 pm Post subject:

Gentoo Bob, "ls /boot"

daveman · n00b Joined: 08 Mar 2006 Posts: 6

Yes I did use grub-install, and this is is exactly what my grub.conf contains below(note: I did not use genkernel)

default 0
timeout 30
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title=Gentoo Linux 2.6.12
root (hd0,0)
kernel /boot/kernel-2.6.15-gentoo-r5 root=/dev/hda3

And you also said that you wanted to see the return of ls /boot
it returned :
boot

And I thank everone so far for all their help, I was planning checking back on the forums tommorrow cuz I thought that that was probably the time someone had replied to my post. But I guess not. The support here is great!

P.S: The live cd won't let me chroot back on again
_________________
There's no place like 127.0.0.1

cyrillic · Posted: Tue Apr 11, 2006 7:13 pm Post subject:

shockertwin · Apprentice Joined: 16 Dec 2005 Posts: 151

i think what we are tryign to get at here is when you copied over your bzImage to /boot, you probably named it differantly than what you are pointing at in your grub conf.

default 0
timeout 30
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title=Gentoo Linux 2.6.12
root (hd0,0)
kernel /boot/kernel-2.6.15-gentoo-r5 root=/dev/hda3

The bold portin of above MUST have the same name as that image you copied over. I believe in the guide it sais to do a

cp bzImage /boot/2.6.15-gentoo-r5

Also, make sure that if you are using the newest gentoo-sources that you name it respectfully. (i believe the newest is 2.6.15-gentoo-r7). you can tell your source by doing a

ls -l /usr/src/linux

also, i fyou want back into your boot partition, jsut remount them in the livecd

mount /dev/hda3 /mnt/gentoo
mount /dev/hda1 /mnt/gentoo/boot

then post up your ls /mnt/gentoo/boot

neysx · Retired Dev Joined: 27 Jan 2003 Posts: 795

There's a much simpler way. Boot and when grub displays its menu, hit c to switch to command-line mode.
Use the TAB key anywhere to see available options if in doubt.
grub> root (hd0,0)
grub> kernel /boot/TAB

grub will display the list of files and your kernel image should be there. Complete the line as in the following example:
grub> kernel /boot/kernel file name root=/dev/hda3
grub> boot

Once booted, mount /boot and make sure your grub config matches the kernel image file name.

If by any chance (or lack thereof), there is no kernel, it means you did not copy it, or did not notice it failed for whatever reason.

If you did compile a kernel, you should still have an image under /usr/src/linux/arch/x86_64/boot/bzImage which you can use for booting:
grub> root (hd0,2)
grub> kernel /usr/src/linux/arch/x86_64/boot/bzImage root=/dev/hda3
grub> boot

Assuming you followed the /boot swap / partitioning plan from the handbook.

If you did not compile any kernel, boot the CD again, mount /dev/hda3 on /mnt/gentoo and /dev/hda1 on /mnt/gentoo/boot, chroot again, compile the kernel, copy the image... Please the amd64 handbook for the details

If you're on SATA, replace all occurrences of hda with sda

Hth

eyeL · Posted: Tue Apr 11, 2006 8:17 pm Post subject:

hm. could it be because his kernel is named kernel-2.6.15-gentoo-r1 and he's using boot/kernel-2.6.15-gentoo-r5?

ls /boot shows kernel-2.6.15-gentoo-r1 but the error says it can't find kernel-2.6.15-gentoo-r5, so try changing that to r1.
_________________
[theNPA - down for updates] | [Adopt an unanswered post]
gentoo 2005.1 [lazy] - gcc 4.1.1

sirdilznik · l33t Joined: 28 Apr 2005 Posts: 731

I wonder why Gentoo has people set up the kernel image naming scheme like it does by default. I've always named my kernel image 'vmlinuz'. This way when I recompile my kernel all I have to do is run

MacBouba · n00b Joined: 10 Apr 2006 Posts: 26

Hi,

I think by the release of your kernel you must have installed the "vanilla" one because the 2.6.15-r5 does not exist(anymore?) for gentoo-sources.
If that's not the case, maybe you have typed a wrong name.

shockertwin · Apprentice Joined: 16 Dec 2005 Posts: 151

umm excuse me??? I installed from gentoo sources from the universal live cd for 2006.0 and the source it came with was gentoo-2.6.15-r5. I think this is the cd that i downloaded less than a week ago. So i am guessing that (depending on the server), gentoo-2.6.15-r5 is the sources currently found on the livecd....

Gentoo Bob · Posted: Wed Apr 12, 2006 4:28 pm Post subject:

daveman · n00b Joined: 08 Mar 2006 Posts: 6

Alright, I've made some progress. But now there is a new problem

I did as most of you have said: reboot the live cd chroot back in and cp over the bzImage. It worked too. But now I have another prob; When I load up grub it and enter gentoo it boots up, while printing a whole bunch of stuff onto the screen that was goin to fast for me to read, like it is supposed to do(I think). Then it stops and comes up w/the following error:

Filesystem couldn't be fixed

Give root password for maintenance
(or type Control-D to continue) :

If I type in my root password it says:
(none) ~#

If I type ctrl-d it says:
* unmounting filesystems
* rebooting

Then it just reboots and I do the same thing all over again. It would be greatly appreciated if someone could diagnose this problem. Thanx-Dave
_________________
There's no place like 127.0.0.1

jmbsvicetto · Posted: Wed Apr 12, 2006 8:33 pm Post subject:

Hi Dave.

Boot the live-cd, mount your partitions under /mnt/gentoo and take a look at /mnt/gentoo/etc/fstab. Are you sure you replaced the /dev/ROOT, /dev/BOOT and /dev/SWAP entries with your actual partitions?
If you don't remember how you partitioned your disk(s) anymore, look at the output of fdisk -l.
_________________
Jorge.

Your twisted, but hopefully friendly daemon.
AMD64 / x86 / Sparc Gentoo
Help answer || emwrap.sh

jmbsvicetto · Posted: Wed Apr 12, 2006 8:36 pm Post subject:

genkigentoo · n00b Joined: 23 Jun 2003 Posts: 14

I installed gentoo on this machine long ago and kept about 25GB free for a Windows partition that I never used until last night. I installed XP on /dev/hda9 knowing it would want to overwrite my MBR and after the XP files were copied to the drive, I noticed it wouldn't boot after the restart. I modified an XP boot floppy with the following boot.ini and was able to boot (changed the partition to 8):

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(8)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(8)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect /noexecute=alwaysoff

XP installed fine afterwards. After this, I booted with the gentoo LiveCD and chrooted to my drive and used grub-install /dev/hda to install grub back into the MBR with the following grub.conf:

default 0
timeout 10
splashimage=(hd0,0)/grub/splash.xpm.gz

title=Gentoo Linux 2.6.15-gentoo-r1-acpi-unichrome
root (hd0,0)
kernel /kernel-2.6.15-gentoo-r1-acpi-unichrome root=/dev/hde3

title=Windows XP
rootnoverify (hd0,8)
makeactive
chainloader +1

My drive looks like this:

/dev/hda1 /boot
/dev/hda2 swap
/dev/hda3 /
/dev/hda5 /opt
/dev/hda6 /var
/dev/hda7 /usr
/dev/hda8 /home
/dev/hda9 /mnt/winnt

I can boot in to XP with the bootdisk. I can boot into Gentoo from grub. But I can't boot into XP from grub. I am getting "Error 12: Invalid device requested." Now I've skimmed this thread and noticed all the windows partitions were in the first partition. Is this my problem? I don't really mind booting XP from a floppy that much since I don't think I'll be booting to it that much. But it'd be kind of cool to get it to boot from grub.

jmbsvicetto · Posted: Wed Apr 12, 2006 10:32 pm Post subject:

I might be wrong, but I seem to recall that Windows doesn't know how to boot from a logical partition. If I recall correctly, you either have to move your partitions around or keep using the XP boot disk.
_________________
Jorge.

Your twisted, but hopefully friendly daemon.
AMD64 / x86 / Sparc Gentoo
Help answer || emwrap.sh

Uerebion · n00b Joined: 10 Apr 2006 Posts: 26

I used the graphical installer for Gentoo, which installed Grub in MBR, I wiped that and re-installed windows boot record. Than I went to the boot partition I had made for gentoo and installed grub there. I can get that grub to regonize my fedora partition, but I keep getting error 15 for my gentoo.

I followed these steps installing grub:
1) boot with a live-CD (for example Knoppix or the Gentoo install CD)
2) mount your root ("/") directory to /mnt/someplace
3) mount your boot ("/boot") to /mnt/someplace/boot
3) chroot /mnt/someplace /bin/bash
4) reinstall your kernel ("cd /usr/src/linux && make install") to your boot partition
5) reinstall grub ("grub")
6) configure your /mnt/someplace/boot/grub/menu.lst or grub.conf

This is my Grub.conf
default 0
timeout 30
splashimage=(hd0,2)/grub/splash.xpm.gz
title=Gentoo Linux
root (hd0,2)
kernel /kernel-genkernel-x86-2.6.15-gentoo-r1 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/sda6
initrd /initramfs-genkernel-x86-2.6.15-gentoo-r1

title Fedora Core (2.6.15-1.2054_FC5)
root (hd0,6)
kernel /boot/vmlinuz-2.6.15-1.2054_FC5 ro root=LABEL=/ rhgb quiet
initrd /boot/initrd-2.6.15-1.2054_FC5.img

something is missing, but I have not been able to find it yet, any help would be appreciate
thanks
Uerebion

brievolz84 · n00b Joined: 09 Apr 2006 Posts: 30 Location: Hburg, Va

I'm having problems with Grub. I used the coding in the handbook as a place to start. But everytime I try to boot up gentoo I get an error in the kernal part of the grub.conf that I wrote. do I need to use brub install? and how to you find out what kernel version I compiled?
_________________
Master Jedi
MSI K8N Neo Platinum
AMD Athlon 64
1.2 GB of ddr ram
GeForce 6800GT
Sound Blaster Audigy 2 (value)

yabbadabbadont · Posted: Thu Apr 13, 2006 6:16 am Post subject:

Just for future reference, grub questions go here: https://forums.gentoo.org/viewtopic-t-122656.html

Follow the instructions in the installation manual for mounting your partitions and chrooting. Then look in /boot to see which kernel is there and what it is called. Use that name when configuring your /boot/grub/grub.conf file. Follow the instructions in the manual for running grub-install. Follow the instructions in the manual for exiting the chroot and unmounting your partitions. Reboot. If you still get grub errors, please post them in the thread I linked to above.

Hope this helps.
_________________

mark_alec · Posted: Thu Apr 13, 2006 6:19 am Post subject:

Merged above two posts.

rakeyry · Posted: Thu Apr 13, 2006 7:35 pm Post subject:

I need to get back into my Grub nano file after I rebooted my system and located an error. How do I do this to correct the error?
_________________
The box said Windows XP or better, so I installed Linux.

yabbadabbadont · Posted: Thu Apr 13, 2006 7:48 pm Post subject:

rakeyry · Posted: Thu Apr 13, 2006 8:06 pm Post subject:

Thanks a billion
_________________
The box said Windows XP or better, so I installed Linux.

rakeyry · Posted: Thu Apr 13, 2006 8:17 pm Post subject:

Now I get this

I'm done configuring the installation, I reboot as instructed and get this message.

yabbadabbadont · Posted: Thu Apr 13, 2006 8:22 pm Post subject:

Boot the live cd and follow the instructions I posted before for mouting your boot partition.

Then post here, the contents of your grub.conf file. Also post the output of 'ls -l /mnt/gentoo'. Further, post details of how you partitioned your drive. (tell us which is boot, swap, root, ...)
_________________