GRUB problem after upgrading to 10.04

[Tom H]

On Sat, May 1, 2010 at 11:37 PM, Goh Lip <g.lip at gmx.com> wrote:
> On 05/02/2010 10:40 AM, user1 wrote:
>>
>> I mean that such an important part of an OS as the bootloader should work
>> out of the box and recognize all the other installed OS without any bugs.
>> If not a lot of people might get a heavy problem. *smile*
>
> Okay, I normally don't use 'sudo update-grub' myself. It's the most
> popular grub command. I'll use baby command 'grub-mkconfig -o
> /boot/grub/grub.cfg' or the grandmother of all grub commands
> 'grub-install /dev/sda' if all fails.

update-grub just runs grub-mkconfig!

# less /usr/sbin/update-grub
#!/bin/sh -e
exec grub-mkconfig -o /boot/grub/grub.cfg "$@"

# less /usr/sbin/update-grub2
#!/bin/sh -e
exec update-grub "$@"

I have not followed this thread (except that I remember that the last
four Ubuntu's were cohabitating on the disk, each with its own grub;
my first thought was that I would uninstall three of them but I did
not want to suggest it and have to deal with any possible subsequent
problems...).

Regarding the last para of user1's last post: The Ubuntu developers
feel the same way. After the release of 10.04, there was a migration
assistant problem (IIRC) whereby grub2's menu was only listing 10.04's
entries and an update-grub would have been needed to populate the menu
fully. They respun some/many/all the isos in order to correct the bug
in spite of the fact that it might have delayed 10.04's release enough
to warrant calling it 10.05.