GNU GRUB 1.97~beta4 error: invalid signature, press any key to continue

[Jeremy Sellors]

On 10-Dec-09, at 12:54 PM, NoOp wrote:

> On 12/09/2009 08:50 PM, Jeremy Sellors wrote:
>> I have a dual boot Windows 7 on the first partition and Ubuntu 9.10
>> server on the other. Everything was working fine until some upgrade
>> today—now I get a Grub error: invalid signature. the selected item
>> GRUB list now flashes. The first menu item is Ubuntu Linux 2.6.31-16
>> Server.
>> How do you repair GRUB?
>
> Google:
> <http://www.google.com/search?complete=0&hl=en&source=hp&q=Ubuntu+% 
> 2B"Grub+error%3A+invalid+signature"&btnG=Google+Search>
>
> Possible:
> http://ubuntuforums.org/showthread.php?t=1264151
> [Grub "Invalid Signature" error when booting windows]
> Note: there are three pages there - check all three.
>
> I've found that when having problems with grub2, using the  
> Supergrub sgd
> allows me to at least boot & then from there I can modify grub if
> necessary. http://www.supergrubdisk.org/
>
> http://developer.berlios.de/project/showfiles.php?group_id=10921
> sgd_cdrom_1.21.iso.gz
> sgd_floppy_1.21.img.gz
>
> Note: I've not been able to use the grub-rescue-cdrom.iso on grub2 -
> works fine for grub/grub1.
>
> Ubuntu info:
> https://help.ubuntu.com/community/Grub2
>
>
>
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Thanks for the help.
I followed a previous post on this list; "Grub beta issue with Kernal  
update/upgrade" by Goh Lip.
I sustituded the -generic with -server but made a typo and it did not  
work. so then I typed 'e' at the grub list which then shows an  
editable frame with the results of the commands showing so I edited  
the mistake I had made and I was able to boot Ubuntu Server. Then I  
ran the:

sudo grub-mkconfig -o /boot/grub/grub.cfg

and I was able to boot into Windows 7.

Checking the emac grub window again I was able to see the results of  
the grub-mkconfg

Jeremy


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