On Sun, Apr 10, 2011 at 11:04 PM, Joel Rees <joel.r...@gmail.com> wrote:
> On Fri, Apr 8, 2011 at 9:18 PM, Tom H <tomh0...@gmail.com> wrote:
>> On Thu, Apr 7, 2011 at 8:38 AM, Joel Rees <joel.r...@gmail.com> wrote:
>>> On Thu, Apr 7, 2011 at 7:58 PM, Tom H <tomh0...@gmail.com> wrote:
>>>> On Thu, Apr 7, 2011 at 3:02 AM, Joel Rees <joel.r...@gmail.com> wrote:
>>>> The grub2 developers decided that most people wouldn't want to set up
>>>> chainloads and would want update-grub to add all the available
>>>> installs to grub.cfg to be directly bootable.
>>>
>>> That's kind of the way it looks, which is kind of shocking to me.
>>
>> If I were to hazard an estimate, I'd say that you're in a very small
>> minority.
>
> If I were to hazard a guess, I'd say that I don't care if I am in the
> minority. Proper engineering principles are proper engineering
> principles.
They must have to target what they can given the resources at hand.
>>>> Renaming 30_os-prober's a good solution too, although it doesn't solve
>>>> the BFO problem without some intervention form your side but nothing
>>>> else does.
>>>
>>> Short of moving Debian off the first drive. Although the tutorial I
>>> linked to above suggests that grub2 doesn't like to be called from
>>> legacy grub.
>>
>> Strange tutorial. Claiming that "grub2 doesn't like to be called from
>> legacy grub" doesn't make any sense.
>
> Didn't make any sense to me, either. But the official manual seems to
> say similar things, and my experience over the last 5 days learning
> more about grub than I wanted, well, I'm not going to argue with them.
>
> Fedora's legacy grub had similar problems to Debian's grub2 when it
> came to finding something to boot on the 3rd drive. I got a message
> about trying to access boot code beyond the BIOS limits at one point.
> The controller card is a cheap raid card that I decided not to hang a
> raid off of. (Maybe I should go master/slave on the first channel
> instead of trying to use the second channel.)
>
>> This is the default behavior when
>> you upgrade from grub1 to grub2.
>
> Never had that experience of upgrading, but how so?
When you install grub2, one of the debconf screens asks whether you
want to install grub2 to the MBR or chainload grub2 from grub1. (I'm
paraphrasing.) If you choose the latter, grub1's menu.lst will have a
stanza with "kernel /boot/grub/core.img" to chainload grub2.
>> Do you mean calling grub1 from grub2? (The latter's not my experience
>> either - but "it works for me" isn't really proof of anything.)
>
> If you know the incantations to get grub2 to chain to legacy grub,
> could I ask you to post how you did it?
>From memory, 40_custom:
#! /bin/sh
cat << EOF
menuentry "Chainload Fedora grub1" {
search --no-floppy --fs-uuid --set=root uuid-of-fedora-boot
chainloader +1
}
EOF
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