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sonicbhoc
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PostPosted: Mon Dec 12, 2005 3:14 am    Post subject: Reply with quote

Grub keeps mounting my reiser3 partition read only! why? just so you know, my reiser partition is / and ext2 is /boot.
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Cinquante
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PostPosted: Tue Dec 13, 2005 11:25 am    Post subject: Reply with quote

Hello

When i boot with my personnal livecd, it can't boot.
This is the result of setup (cd) in grub :

Code:

Checking if "/boot/grub/iso9669_stage1_5" exists... yes
Runnig "embed /boot/grub/iso9660_stage1_5 (hd31)" ... failed (this is not fatal)
Error 31 : File is not sector aligned


What is the error ?
I am using the HOWTO for create my livecd.

Thank and excuse my english
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NeddySeagoon
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PostPosted: Tue Dec 13, 2005 6:07 pm    Post subject: Reply with quote

sonicbhoc,

grub does not actually mount any partitions. All it does is load the kernel into memory, load in initrd file (if there is one) into memory and attach it to /dev/ram0 then pass control to the kernel. From here on its up to the kernel.

HAving said that, I suspect that you get an error message about fsck failing during booting.
This is normallay caused by incorrect entries in /etc/fstab. Look carefully at the line for your root partition.
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Legions
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PostPosted: Fri Dec 16, 2005 8:46 pm    Post subject: Reply with quote

i dont know what a grub is :-/
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jmbsvicetto
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PostPosted: Fri Dec 16, 2005 11:24 pm    Post subject: Reply with quote

Hi and welcome to the forums Legions!

GRUB is the GRand Unified Boot-loader. It boots your system and presents you the menu to select the OS or kernel to boot.
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inf0c0m
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PostPosted: Sat Dec 17, 2005 7:03 am    Post subject: Reply with quote

im getting the 'Error 15'. never really had this problem before, tried reinstalling grub a few times, nothing has worked yet. heres the info i can provide, lemt me know what else is needed

grub.conf:

default 0
timeout 5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title=Gentoo Linux 2.6.14-r5
root (hd0,0)
kernel /boot/kernel-2.6.14-gentoo-r5 root=/dev/hda3

livecd linux # ls -l /boot/
total 2406
-rw-r--r-- 1 root root 33754 Dec 16 18:43 config-2.6.14-gentoo-r5
drwxr-xr-x 2 root root 1024 Dec 16 19:32 grub
-rw-r--r-- 1 root root 2404124 Dec 16 19:31 kernel-2.6.14-gentoo-r5
drwx------ 2 root root 12288 Dec 16 15:16 lost+found


any reason my system.map isnt there as well as a ton of other files that normally are? a look at my working gentoo system:

mythbox ~ # less /boot/grub/grub.conf
default 0
timeout 5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title=Gentoo Linux 2.6.14-r4
root (hd0,0)
kernel /boot/kernel-2.6.14-gentoo-r4 root=/dev/hda3

mythbox ~ # ls -l /boot/
total 5555
lrwxrwxrwx 1 root root 27 Dec 11 05:10 System.map -> System.map-2.6.14-gentoo-r4
-rw-r--r-- 1 root root 923106 Dec 11 05:10 System.map-2.6.14-gentoo-r4
lrwxrwxrwx 1 root root 1 Dec 10 18:45 boot -> .
lrwxrwxrwx 1 root root 23 Dec 11 05:10 config -> config-2.6.14-gentoo-r4
-rw-r--r-- 1 root root 38041 Dec 11 05:14 config-2.6.14-gentoo-r4
drwxr-xr-x 2 root root 1024 Dec 16 18:24 grub
-rw-r--r-- 1 root root 2342714 Dec 12 12:38 kernel-2.6.14-gentoo-r4
drwx------ 2 root root 12288 Dec 10 18:28 lost+found
lrwxrwxrwx 1 root root 24 Dec 11 05:10 vmlinuz -> vmlinuz-2.6.14-gentoo-r4
-rw-r--r-- 1 root root 2342520 Dec 11 05:10 vmlinuz-2.6.14-gentoo-r4


any ideas?
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NeddySeagoon
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PostPosted: Sat Dec 17, 2005 10:15 am    Post subject: Reply with quote

inf0c0m,

info grub says :-
Code:
15 : File not found
     This error is returned if the specified file name cannot be found,
     but everything else (like the disk/partition info) is OK.
which normally means you have a typo.

You have something more subtle wrong.
Normally /boot contains a symbolic link to itself like this
Code:
lrwxrwxrwx  1 root root       1 Dec 14  2004 boot -> .
which you seem to have missing.
This is a dirty hack that allows grub.conf to be the same regardless of the existance of a real /boot partition or not.
With a real /boot, the root (hd0,0) statement points to the place where the kernel actually is.
With a /boot folder on the root partition root (hd0,0) points to the kernels root partition and the kernel is in /boot, which you have to provide in the path to kernel. The link allows the /boot to be provided wethee its needed or not.

There are two things you can do (theres always a choice). Add the symbolic link or
remove the /boot from
Code:
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
kernel /boot/kernel-2.6.14-gentoo-r5 root=/dev/hda3

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Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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inf0c0m
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PostPosted: Sat Dec 17, 2005 2:09 pm    Post subject: Reply with quote

NeddySeagoon wrote:
inf0c0m,

info grub says :-
Code:
15 : File not found
     This error is returned if the specified file name cannot be found,
     but everything else (like the disk/partition info) is OK.
which normally means you have a typo.

You have something more subtle wrong.
Normally /boot contains a symbolic link to itself like this
Code:
lrwxrwxrwx  1 root root       1 Dec 14  2004 boot -> .
which you seem to have missing.
This is a dirty hack that allows grub.conf to be the same regardless of the existance of a real /boot partition or not.
With a real /boot, the root (hd0,0) statement points to the place where the kernel actually is.
With a /boot folder on the root partition root (hd0,0) points to the kernels root partition and the kernel is in /boot, which you have to provide in the path to kernel. The link allows the /boot to be provided wethee its needed or not.

There are two things you can do (theres always a choice). Add the symbolic link or
remove the /boot from
Code:
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
kernel /boot/kernel-2.6.14-gentoo-r5 root=/dev/hda3


i do have a real boot partition, so would removing /boot fix those?

Code:
/dev/hda3 on / type reiserfs (rw)
/dev/hda1 on /boot type ext3 (rw)
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othar
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PostPosted: Sat Dec 17, 2005 4:00 pm    Post subject: Error 11: Unrecognized device string Reply with quote

Hi, I'm new to the linux and gentoo stuff but I'm giving it a try. Currently I'm trying to install a kernel-2.6.12-gentoo-r6 on a Xeon computer. Everything run smoothly (kind of, after a few tries) till the reboot part, I installed the grub but on the boot I get the following message:

root (hd0,0)
filesystem type is ext2fs, partition type 0x83
kernel /kernel-2.6.12-gentoo-r6-myfirstkernel
[Linux-bzimage, setup=0x1c00, size=0x207490]
root=/dev/sda3 udev

Error 11: Unrecognized device string

My guess is that the grub does not recognize the filesystem on the boot partition, because the filesystem is actually an ext3fs, not an ext2 like the message says. I did this cause the boot partition size is 1 Gb, and someone told me that in large partitions the ext3 is better.
My disk partitions are as follows:
sda1 Boot ext3fs
sda2 swap
sda3 root ext3fs
sda4 home ext3fs
And the computer does have an sda, not a hda.
The grub.conf is like this:
default=0
timeout=2
#splashimage=(hd0,1)/grub/splash.xpm.gz
title Gentoo
root (hd0,0)
kernel /kernel-2.6.12-gentoo-r6-myfirstkernel
root=/dev/sda3 udev

Can anyone tell me how to stop this from happening?

Thanks
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NeddySeagoon
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PostPosted: Sat Dec 17, 2005 5:12 pm    Post subject: Reply with quote

inf0c0m,

Yes - I can tell you have a real boot partition because your ls /boot showed a lost+found folder.
Removing the /boot from the two lines I hightligheted in your grib.conf should fix your grub issue.

Your splashimage failed because (hd0,1) is your swap. There is no splashimage file there.
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Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.


Last edited by NeddySeagoon on Sat Dec 17, 2005 5:16 pm; edited 1 time in total
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NeddySeagoon
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PostPosted: Sat Dec 17, 2005 5:15 pm    Post subject: Reply with quote

othar,

This must be on a single line in grub.conf
Code:
kernel /kernel-2.6.12-gentoo-r6-myfirstkernel
root=/dev/sda3 udev

No matter how long the kernel line, it must be one line.
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Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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othar
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PostPosted: Sun Dec 18, 2005 3:36 pm    Post subject: Reply with quote

8O

Thanks, I've never suspected that.

:)
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Lazy_Dewd
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PostPosted: Sun Dec 18, 2005 7:38 pm    Post subject: Reply with quote

haven't seen this one around. for the collection

Problem:
Grub Error 13: can't recall what it was he said but it was something about not being able to read the executable format. not sure tough. correct me by all means

solution: simply booted with my backup-kernel (if you don't have it, just use the cd) and made my kernel again (actually, I didn't changed anything), listed the modules and checked them with the ones in the autoload.d file. ran modules-update
reboot. worked fine.

hope it can help someone - don't know what it went wrong the first time tough.
working backup kernel is not a luxury
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DrunkenWarrior
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PostPosted: Mon Dec 19, 2005 12:18 am    Post subject: grub error 15 -- when adding 2nd hard disk [solved] Reply with quote

hey all you grub jedi's...

....i installed gentoo as per the standard instructions in the handbook, same reccomended partition scheme on one hard drive.

i have 2 maxtor drives, both of them have correct jumper settings for master and slave.:
1. master: 40g
2. slave: 200g

when i add the 2nd hdd (slave) grub gives

Grub Error 15

and thats it! i bought a new cable, didn't fix the problem. i had linux installed on the 200g also, so i tried removing the partitions with fdisk but it didn't help. come to think of it, i deleted the partitions then quit, did i have to save that to the disk before quitting? anyways..

grub works if only the master is connected. what do i have to do to get the other drive formatted ext3 and working to store my data?

many thanks in advance..

[here is my grub.conf:]
Code:

default 0
timeout 8

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

title=Gentoo Linux 2.6.14-r2
root (hd0,0)
kernel /kernel-genkernel-x86-2.6.14-gentoo-r2 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/hda3 udev
initrd /initramfs-genkernel-x86-2.6.14-gentoo-r2

title=Gentoo Linux 2.6.14-r2 + 3d!
root (hd0,0)
kernel /bzImage root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/hda3 udev
initrd /initramfs-genkernel-x86-2.6.14-gentoo-r2


/* edit -- this was solved when i reread the insallation handbook, it said grub usually names the drive hd0, hd1... hdn in the BOOT order, not master/slave order on the cables. when i changed the boot order in my bios to HDD0, HDD1 instead of HDD1, HDD0 my drives are now recognized as PRI/MAS == (hd0) and PRI/SLA == (hd1) in grub. thanks to NeddyS and Lazy for pointing me in the right direction. */
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Last edited by DrunkenWarrior on Wed Dec 21, 2005 3:05 am; edited 1 time in total
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Lazy_Dewd
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PostPosted: Mon Dec 19, 2005 11:53 am    Post subject: Reply with quote

Quote:
did i have to save that to the disk before quitting?
yes

it's not about your cable that's for sure.

grub might detect your other drive before your 40G. in this case you would have to tell grub to look on the second drive instead of the first.
edit this line to your situation:
Code:
real_root=/dev/hda3


probably something like hdb3, unless you're using sata that is
it's worth a try. post back if it's solved or not
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NeddySeagoon
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PostPosted: Mon Dec 19, 2005 6:04 pm    Post subject: Reply with quote

DrunkenWarrior,

I suspect that you are trying to boot from your slave if itrs fitted and the BIOS falls back to the master if its not there.
Boot the liveCD with both master and slave fitted and go prat waay through the manual grub install, using grubs tab completion.
You will use the different partition layout on each drive to tell them apart.

In the following -> means press the tab key. Do
Code:
grub
root (hd->
and grub will list your drives. It should respond with hd0 and hd1
continue the command
Code:
root (hd0,->
and grub will list the partitions on hd0.
From this, you should be able to tell if you are looking at the mast or slave.
Use ctrl-c to quit.
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stokesxray
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PostPosted: Mon Dec 19, 2005 6:36 pm    Post subject: SOLVED typo error in grub how to change? Reply with quote

I am totally new to linux. when I installed gentoo and got to the part about grub i used the grub command and type the wrong leading ) ) instead of this ( how to i change this? I can get the system to boot when I edit that line and then hit b but I would like to make it permanant.

thanks

merry xmas


Last edited by stokesxray on Mon Dec 19, 2005 7:29 pm; edited 2 times in total
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at240
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PostPosted: Mon Dec 19, 2005 6:39 pm    Post subject: Reply with quote

You need to edit /boot/grub/grub.conf

So, as root, mount your /boot partition (mount /boot) if it isn't already mounted and then:
Code:
nano -w /boot/grub/grub.conf
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nixnut
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PostPosted: Mon Dec 19, 2005 7:06 pm    Post subject: Reply with quote

Merged above two posts here.
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stokesxray
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PostPosted: Mon Dec 19, 2005 7:45 pm    Post subject: thanks Reply with quote

thanks a ton Tux's lil' helper did the trick :D
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Anon5710
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PostPosted: Mon Dec 19, 2005 10:00 pm    Post subject: Reply with quote

Gasp... How am i going to explain this..


Okey about 2 hours ago i had a fully working gentoo system.
Now for some damn reason i did a

Code:

rm /boot/*


don't know the exact command anymore, but i deleted everything in my /boot folder :oops: :oops:
Why i did that? Beats me... i hitted enter just to fast i think.

Anyway.. not know to much about gentoo i decided to just reboot and restart with the x86 minimal iso.
I Chrooted into my gentoo instalation and compiled a new kernel copied it to /boot.

I unmerged grub (just to be safe) and emerged it back up again... (it was deleted)
enterd the fowweling command:
Code:

grep -v rootfs /proc/mounts > /etc/mtab

Its in the manual so i did that.
instaled grub like this:
Code:

grub> root (hd0,0)       
grub> setup (hd0)           
grub> quit     


Checked everything for no errors, The names in my grub.conf match the files i specified and rebooted.

I boot up, blank screen (just a black screen)
Tough i can go up and down (with the arrow keys) to boot gentoo OS or windowsXP. (i don't see "me" going up or down)
I select my gentoo partition hit enter and... it gives me an error 15 can't find the file or something)
Now i get kinda upset knowing that i did enter the correct name.

Anyone here got a clue on what i got to do ?


here's my grub.conf

Code:

default 0
timeout 30
splashimage=(hd0,0)/boot/grub/splash.xpm.gz

title=Gentoo Linux 2.6.15-r5 (defaults)
root (hd0,0)
kernel /boot/kernel-2.6.15-gentoo-r5-defaults root=/dev/sda3

title=Windows XP
rootnoverify (hd0,5)
makeactive
chainloader +1


I hope some can help me :)


// and yes, its stupid to remove everything from your /boot dir (probably the reason why i can't boot)
// So how to fix that ?
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NeddySeagoon
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PostPosted: Mon Dec 19, 2005 11:11 pm    Post subject: Reply with quote

Anon5710,

Error 15 is file not found. Either your splashimage or kernel filenames are wrong ?
Do you see the splash image at boot time, if so, its your kernel filename thats the problem
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Anon5710
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PostPosted: Tue Dec 20, 2005 4:26 pm    Post subject: Reply with quote

i do not see the splashimage at boot
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Anon5710
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PostPosted: Tue Dec 20, 2005 4:48 pm    Post subject: Reply with quote

i recheked it again...
My grub.conf does really point to the right locations :cry:
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rncwnd
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PostPosted: Tue Dec 20, 2005 8:11 pm    Post subject: Reply with quote

Does anybody know EXACTLY what error 17 means?
Is it a problem with the grub installation (grub; root (hdx,y); setup(hdz);) or is it a grub.conf problem?

My config:

hde -> data disk (non-boot, non-os, PATA-Disc)
sda -> Win XP Pro disc (bootable)
sdb -> Gentoo Disc (non-boot)

sdb1 -> /boot
sdb5 -> /
sdb6 -> swap

theoretically it should be:
(hd0) -> hde
(hd1) -> sda
(hd2) -> sdb

I installed grub in the mbr of (hd0) which is sda. That's correct so far.
I pointed grub to use (hd2,0) as "root". That should be correct (I tried also hd0 and hd1, but there is no e2fs-partition on)

Why do I get error 17????

Greez,
Andy
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