[CentOS] Help! Help ! i done centos upgrade

Ernatalo su Gmail ernatalo at gmail.com
Tue Sep 14 10:03:32 EDT 2010


  Thank so much!
i try your hint
I'll ggive you novice
Best regards

Ernatalo

Il 14/09/2010 15.39, m.roth at 5-cent.us ha scritto:
> Theo Band wrote:
>>   On 09/13/10 17:48, Ernatalo su Gmail wrote:
>>>    i know that this is a good thing, but i've only 1 partition.
>>> /boot and /root are in the same partition that i convert from ext3 ti
>>> ext4.
>>> everything works fine until this morning. I "rebooted" the server many
>>> time from the "convertion"
>>> but i had never upgrade the Centos before today.
>>> with the update the trouble begun!
>>> from Installation DVD i can see the /dev/sbd1/ (hd0,0) and with fdisk -l
>>> i can see that it's an ext4 partition.
>> Nothing to worry if you can still mount the disk while booting from the
>> DVD. From the grub shell you can also issue a find command (find
>> /boot/grub/grub.conf). Perhaps the disk is mixed up and it is now hd1
>> and hd0 is you external drive?
>>
>> (hd1,0)/boot/grub/grub.conf
>>
>> If you start typing "(hd" and then use command completion, you will see
>> which drives are seen by grub like hd0 or hd1 etc, and what partitions
>> exist).
>>
>> root(hd1)
>> configfile /boot/grub/grub.conf
>> will get you back to the boot menu. (It's all from my head, so mind some
>> typos)
> What he said. Also, note that filename completion is enabled in the grub
> shell, so if you type
> root (hd0,0)
> then try
> kernel /vm<tab>
> and don't get anything, try
> root (hd0,1)
> or 2, or
> root (hd1,0)
> etc, until you get a completion. At that point, you'll know what your root
> disk is (hd0, or 1, or whatever). Once you boot up and have a running
> system again, run
> $ grub-install /dev/<whateveryour/bootdrive is), like
> $grub-install /dev/sda
>
> Quirk: regardless of what it is, /boot/grub/grub.conf seems to see the
> physical drive /boot is on as (hd0)... and don't confuse, say, /dev/sda1
> with grub's (hd0,1): two different nomenclatures.
>
>          mark
>
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