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satimis

02-07-2008 04:37 AM

Fail to boot after installation

Hi folks,

86-64 2007-08-02 core ISO

Installation went through w/o problem. After finish on reboot it hangs on "GRUB". The bootloader seems missing.

# fdisk -l

Code:

/dev/sda1  *  Linux  (/boot)

/dev/sda2      Linux  ( / )

/dev/sda3      Linux  (/var)

/dev/sda4      Extended

/dev/sda5      Linux swap / Solaris

/dev/sda6      Linux  (/home)

# mount /dev/sda1 /mnt
# ls /mnt

Code:

Systam.map26  grub        kernel26-fallback.img    lost+found

diag1.img          kconfig26  kernel26.img                vmlinuxz26

# cat /mnt/grub/menu.lst

Code:

timeout  5

default  0

color  light-blue/black  light-cyan/blue





# (0) Arch Linux

title  Arch Linux

root  (hd0,0)

kernel  /vmlinuz26  root=/dev/sda2  ro

initrd  /kernel26.img



# (1) Arch Linux

title  Arch Linux Fallback

root  (hd0,0)

kernel  /vmlinuz26  root=/dev/sda2  ro

initrd  /kernel26-fallback.img

Please advise where shall I check and how to fix the problem. TIA

B.R.
satimis

Simon Bridge

02-07-2008 04:44 AM

Quote:

The bootloader seems missing.

How do you know?

If so - then you need to install grub to the master boot record of sda.

satimis

02-07-2008 04:54 AM

Quote:

Originally Posted by Simon Bridge (Post 3048901)

How do you know?

If so - then you need to install grub to the master boot record of sda.

Just juess. On re-run installation coming to the item "install bootload", it popup "Counln't find /mnt/boot/grub/menu.lst. Is GRUB installed".

I'm now googling around and found the same problem encountered by other folks.

satimis

syg00

02-07-2008 05:11 AM

If you get the grub "prompt" and can't enter anything, it means;
a) grub stage1 is in the MBR, and (usually)
b) it can't find the stage file/menu.lst ...
It's not really a prompt, it's a (deliberate) hard error message loop.

chroot into your disk install, cd into the /boot/grub. and run this

Code:

grub

root (hd0,0)

setup (hd0)

boot

The 64-bit Arch runs fine here on both dual and quad core 2 ...

satimis

02-07-2008 05:58 AM

Quote:

Originally Posted by syg00 (Post 3048934)

Thanks for your advice.

I haven't run chroot for sometimes. Could you please advise the steps to be performed to chroot /dev/sda1, the /boot partition. TIA

B.R.
satimis

syg00

02-07-2008 07:07 AM

No need as it turns out - just do it from the Arch CD. Hit enter to get to bash (don't run the setup). Grub (executable) is on the CD - run all the commands from there.
I just tried it.

satimis

02-07-2008 07:26 AM

Quote:

Originally Posted by syg00 (Post 3049002)

No need as it turns out - just do it from the Arch CD. Hit enter to get to bash (don't run the setup). Grub (executable) is on the CD - run all the commands from there.
I just tried it.

Thanks.

Just tried after booting up the pc with the installer CD

# grub-install --recheck /dev/sda1
Could not find kernel image

# vmlinuz root=/dev/sda2

Code:

.....

.....

List of all partitions:

No filesystem could mount root, tried:

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Would it be something else?

Haven't tried your previous suggestion yet.

B.R.
satimis

satimis

02-07-2008 09:04 AM

(solved)

Hi syg00,

Problem solved as follows;

Booting up the PC with the installer CD by pressing [Enter]

# fcsk /dev/sda2

# grub
grub> root (hd0,0)

Code:

Filesystem type is ext2fs, partition type 0x83

Checking if "/boot/grub/stage1" exists ..... no

Checking if "/grub/stage1" exists ... yes

Checking if "/grub/stage2" exists ... yes

Checking if "/grub/e2fs_stage1_5" exists ... yes

Running "embed /grub/e2fs_stage1_5 (hd0)" ... 23 sectors are embedded.

Succeeded

Running "install /grub/stage1 (hd0) (hd0)1+23 p (hd0,0)/grub/stage2 /grub/menu.lst" ... succeeded

Done

grub> kernel /vmlinuz26 root=/dev/sda2

Code:

[Linux-bzImage, setup=0x1c00, size=0x1ca588]

grub> boot
[Arch Linux: /]# reboot

It boots to;
moyhost login: root
[root@myhost ~]#

It is OK now. Thanks again for your assistance.

B.R.
satimis

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