Hi,
I just rebooted my (remove) server.
I logged in KVM and I see this:


if I type ls I obtain:

hd1 is the new hard disk that I inserted (previous disk reported failure).

How can I solve this?
OS is ubuntu 12.04
I use software raid (mdadm)

thank you

If I type:

ls (hd0,gtp1) (or even gpt2... gpt5)

I obtain:

"unknown filesystem"

I guess since you replied. The zero reply rule does not apply to my post. So here goes nothing.

My guess. Your servers do not go online. Hence the 12.04 LTS which eol'd back in 2014.


Anyhows. what does a live cd run with a parted -l or fdisk -l command say about what file system and partion layout is? A a blkid command for UUID numbers? Since you say

I don't run raid and what problem you have is kinda out of my league on answering.
But I figured since the zero reply was busted. What the heck is the harm in trying some answer?

http://www.supergrubdisk.org/

If my post is out of line. Then just ignore this. Sorry.

1 members found this post helpful.

Well, don't forget that grub numbers devices from zero while Linux usually numbers them from one.

Hi, according to command output, it seems that hd0 is "fine", because grub is able to see partitions (gpt1, gpt2, and so on..)
hd1 shows no partition at all because it is a new disk (that makes perfectly sense).

Since this is raid1, I MUST be able to boot with only 1 disk (if grub has been installed on both disks, of course).

Anyway, I can't browse file system on "good" hard disk.. I need help with this.
Thank you!

You have to load grub2 file system modules such as

insmod part_gpt
insmod ext2

at the grub command line if you are using extn. Without these modules grub can't understand the file system and the partition format. These two modules are in all of the boot targets I have.

2 members found this post helpful.