Booting problem

monojeffrey · 01-23-2013, 08:40 PM

am running Red hat 5
having some problem with booting
attached snapshot

is there any option called
Last known good configuration (like in windows)
to resume normal booting of the server

--
thanks for the help

chrism01 · 01-23-2013, 10:28 PM

Looks like the kernel or related file is missing.
You could use the install media and select Rescue mode to edit /boot/grub/grub.conf on the disk and use another kernel.
Usually it defaults to 3 kernels being configured there.
https://www.centos.org/docs/5/html/I...mode-boot.html

monojeffrey · 01-24-2013, 04:01 AM

i went to the link and referred found to be good one (learned how to edit grub)
but the problem is there is no root partition
i attached the snap shots of the rescue mode

--
thanks for the help

chrism01 · 01-24-2013, 05:22 AM

In that 2nd screen ie cli, try

Code:

fdisk -l

that's a lowercase L param.
We can check to see what you've got.

monojeffrey · 01-24-2013, 11:00 PM

hi chris
i have attached the fdisk -l output as you mentioned

chrism01 · 01-24-2013, 11:55 PM

Well, as you can see, that says you've got a formatted 16GB disk with Linux and an unformatted 10GB disk.
Does that sound right to you?

You'll notice that /dev/sda1 has a '*' in the 'Boot' column, so that's your boot partition, so you should try to mount that under /mnt/sysimage and you should find the grub file as above.

I'll just point out that those are pretty small disks for a modern distro. You'll need to be careful what (ie how much) SW you install.

FYI RHEL 5 Install http://www.linuxtopia.org/online_boo...ide/index.html & Admin http://www.linuxtopia.org/online_boo...ion/index.html guides.

Good Luck

monojeffrey · 01-25-2013, 09:33 PM

hi chris,
its just a VM workstation environment
am just developing an environment for practicing Linux(would be installing only one application with oracle database)
i have been with linux environment for the past three months only(novice)
so , i would read the links wat u have mentioned
thank u so much for your patience and clearing my silly mistakes

monojeffrey · 01-25-2013, 11:44 PM

i could not find the boot partition files(grub.conf) etc
i created a directory called moon
and used this command
mount -t ext3 /dev/sda1 /moon (since sda1 contains the boot partition )
when i navigated to /moon i found the files which is attached to the snapshot

yancek · 01-26-2013, 10:31 AM

The image in your last post shows the kernel (vmlinuz...) which is shown as a hidden file (prefixed by a dot (.) and is a different verson than the kernel from your initial post?? No other boot files show. What's in the lost+found directory?

monojeffrey · 01-26-2013, 07:43 PM

i mounted the /dev/sda1 contents to moon
the snapshot attached shows the contents inside
unable to find grub and other files related to the boot partitions.

yancek · 01-27-2013, 12:13 PM

Mount sda1 again and run this: ls -la /moon/lost+found/

I don't think it's going to show much, anything useful that is.

monojeffrey · 01-28-2013, 04:03 AM

have attached the snapshot of lost+found dir

yancek · 01-28-2013, 09:19 AM

Doesn't look like there is much hope here. Your kernel was changed for some unknown reason and you don't have any boot files on sda1.