SV: SV: Bug noted for Ubuntu 9.10 when changing boot order

[Kurt Poulsen]

Hello Technical Support

Thank you for your advice, I will follow it shortly as I am very booked with
work right now.

Kind regards

Kurt

-----Oprindelig meddelelse-----
Fra: ubuntu-users-bounces at lists.ubuntu.com
[mailto:ubuntu-users-bounces at lists.ubuntu.com] På vegne af Rashkae
Sendt: 30. marts 2010 04:27
Til: Ubuntu user technical support, not for general discussions
Emne: Re: SV: Bug noted for Ubuntu 9.10 when changing boot order

Rashkae wrote:
> Kurt Poulsen wrote:
>> Hello Jeff
>>
>> Thank you for your kind word and advices, I will do as suggested. I was
in
>> no way upset just "plain humble" hi !!
>> I am very respectfull to the fantastic spirit and work the community is
>> performing to the benefit of the entire world. These 25 PC's will be
>> delivered to a Hospital in Rumania in the week between 17 and 25 april
and I
>> am proud to be part of such a charity program.
>>
>> Kind regard
>>
>> Kurt 
>>
> 
> Hi Kurt.
> 
> If you have a time to investigate this problem, here would be what I 
> think some interesting information to gather.
> 
> 1. Install Ubuntu as normal.
> 
> 2. Gather the output of:
> 
> sudo fdisk -l /dev/sda
> sudo blkid
> 
> 3.  Replicate the failure by changing the boot order in Bios.
> 
> 4. Boot from the install live cd and use those commands (fdisk -l and 
> blkid) again.
> 
> Unless I'm missing something, from what I gather in your first message, 
> the grub2 device probe is corrupting the data on the hard drive when the 
> BIOS boot order is FD first.  This is most certainly a bios bug, but 
> severe enough that the grub developers will probably want to identify it 
> and add a work-around.  However, this problem is probably unique to the 
> hardware you were using, (and might also warrant a bios patch from the 
> manufacturer if you can get their attention to the problem.)
> 
> 

Here's another valuable test.

1. Install Ubuntu as normal.

2. Edit the grub.cfg file.

sudo chmod u+w /boot/grub/grub.cfg
sudo gedit /boot/grub/grub.cfg file

Scroll down to the menu entries for ubuntu and comment out the line that 
looks like:

search --no-floppy --fs-uuid --set c36d3e92-aa8f-4009-a5f3-cf520f89a8b2

(basically, comment out or remove all lines that start with search).

It's important that you do not install any updates while running this 
test, since kernel updates will undo any changes you make to this file.

3. Reboot and verify that you can still boot as normal

4. Change the bios boot drive order and see if you still experience the 
install drive corruption you reported.



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