OK
I did the following:
1. Remove sda from raid (using mdadm)
2. Run dd (dd if=/dev/zero of=/dev/sda bs=512 count=1000)
3. Copy the current disk partition table (sfdisk -d /dev/sdb | sfdisk /dev/sda)
4. add disk to raid (using mdadm)
5. reinstall grub (using grub command)
6. run grub-install /dev/sda
7. Reboot
and now it's working :)
I did all the above steps before except step 2, it seems I need to
clear the disk with dd
Thank you Markus for your reply.
echo "Hello World :)"
On Sun, Sep 15, 2013 at 8:28 PM, Markus Falb <wnefal@xxxxxxxxx> wrote:
>
> On 15.Sep.2013, at 11:37, Ahmad AlTwaijiry wrote:
>
>> Hello Everyone
>>
>> I have a remote CentOS 6.4 server (with KVM access), when I received
>> the server it was running with LVM on single disk (sda)
>>
>> I managed to remove LVM and install raid 1 in sda and sdb disks
>>
>> the mirroring is working fine, my only issue now is that everytime I
>> reboot the server I got the grub command line and I have manually boot
>> using comand
> ...
>> I tried almost everything I can find in the internet.
>
> You did reinstall grub? Something like (or similar)
>
> $ grub-install /dev/sda
> $ grub-install /dev/sdb
>
>> Note: each disk (sda & sdb) is 2TB size, could this be the problem?
>
> No. I do not think so.
>
> --
> Markus
>
>
>
>
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