grub error 18

[Charles T. Bell]

Christopher Chan wrote:
> Clay Weber wrote:
>   
>> On Sunday 20 September 2009 08:16:35 pm Christopher Chan wrote:
>>   
>>     
>>> Goh Lip wrote:
>>>     
>>>       
>>>> Chan Chung Hang Christopher wrote:
>>>>       
>>>>         
>>>>>> I take it that you now have no problem booting after the
>>>>>> root...setup... from the livecd.
>>>>>>           
>>>>>>             
>>>>> Yup.
>>>>>
>>>>>         
>>>>>           
>>>>>> Grub legacy have precisely some problems not only with LBA cylinder but
>>>>>> also with newer bios. Instead of trying to fix your grub, I suggest you
>>>>>> convert your grub legacy to grub2. After all, karmic will default to
>>>>>> grub2. sudo apt-get install grub-pc
>>>>>>           
>>>>>>             
>>>>> the weird grub file somehow gives me the impression that grub2 is
>>>>> installed? What grub does the LiveCD for Jaunty use?
>>>>>         
>>>>>           
>>>> Livecd? I don't know without popping in the livecd. you can check by
>>>> going to /boot/grub/  and see if there is menu.lst or grub.cfg, maybe
>>>> both. But it doesn't really matter, right? Livecd grub is always quite
>>>> empty, just to start up the cd. The more important point is your
>>>> installed jaunty partition. If you have meaningful entries in grub.cfg,
>>>> then it is installed. There should also be meaningful entries in
>>>> menu.lst whether grub2 is installed or not.
>>>>
>>>> If you have installed grub2, you can always reinstall if you did not
>>>> follow up on the instructions where it wasn't installed to mbr giving
>>>> rise to your problem. If it wasn't installed, okay, install it.
>>>>       
>>>>         
>>> Let me make it CRYSTAL CLEAR. Jaunty booted up fine after the first
>>> installation. However, after updating the packages to whatever latest
>>> versions available, it apparently keeps messing up grub whenever it is
>>> shutdown or rebooted. I have done nothing at all with grub or grub2
>>> manually. I have not had a chance to check yet but I get the impression
>>> my problems stem from grub2 since I see comments and other stuff besides
>>> menu entries in the grub configuration file.
>>>
>>> At this moment, it would seem that the LiveCD probably installs grub but
>>> the updates snuck in grub2. When I next get my hands on that box, I will
>>> verify what package(s) of grub are installed. Now if someone can tell me
>>> what script messes around with grub/grub2 during shutdown, I will
>>> happily file a bug report since I have no other Jaunty installation
>>> lying around.
>>>
>>>     
>>>       
>> Jaunty installs grub 1 by default, you would have to explicitly install the 
>> package grub-pc yourself in order to get grub2, so grub2 is not an issue here. 
>> Even with updates.
>>
>> have you tried repairing grub after finally getting jaunty booted via the 
>> livecd?
>>   
>>     
> Yes, which is why I am getting very cross now. After booting into the 
> LiveCD, I run konsole, sudo -i, grub, root(hd0,0), setup(hd0), quit, 
> reboot. The installed Jaunty boots up just fine. After a shutdown...I am 
> ready to get a sledgehammer and smash something up. Something is messing 
> around with grub during shutdown.
>
>   
>> Can  you boot into safe mode, where there is an option to repair grub?
>>
>> The grub error 18 is saying that the partition you are trying to boot from is 
>> in a portion of  your drive that your system's *bios* doesn't support/can't 
>> see. But as you were able to boot before, this is definitely clouding the the 
>> problem's causes. Perhaps the partition table has become corrupted?
>>
>>   
>>     
>
>
> The thing is though that I had no problems after initial installation. I 
> did not have to deal with 'grub error 18' until after I updated the 
> packages.
>
>   
Have you tried Super GRUB?  You can get an ISO and create a
bootable disk to fix GRUB.

http://linux.softpedia.com/progDownload/Super-Grub-Disk-Download-8071.html

Tom

 Quis custodiet ipsos custodes?  -- Decimus Iunius Iuvenalis (Juvenal), Roman Poet, late 1st, early 2nd century AD
("Who will protect us from the protectors?")

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