[Mageia-dev] Grub2 vs. Grub Legacy in M3

[Barry Jackson]

On 04/02/13 19:18, Felix Miata wrote:
> On 2013-02-04 14:27 (GMT) Barry Jackson composed:
>
>> Felix Miata wrote:
>
>>> Nice in theory, but the root device is off by -1. Default menu.lst
>>> cmdline includes root=LABEL=22cauldrn instead of UUID or device name,
>>> which is apparently disregarded by grub 2.
>
>> Maybe a limitation of legacy_kernel.
>> Normally to use labels in grub2 the 'search' command is used without any
>> reference to the device assignment.
>> Like:-
>
>> menuentry 'Mageia-2 multiboot' {
>> search --no-floppy --label --set=root mageia-2
>> multiboot /boot/grub2/i386-pc/core.img
>> }
>
>>> menuentry 'Cauldron defkernel' {
>>>    legacy_kernel   '(hd0,22)/boot/vmlinuz' '(hd0,21)/boot/vmlinuz'
>>> 'root=LABEL=22cauldrn' 'splash=verbose' 'noresume' 'video=1152x864'
>>> 'vga=794' '3' ''
>>>    legacy_initrd '(hd0,22)/boot/initrd' '(hd0,21)/boot/initrd'
>>> }
>
>>> It works when I s/hd0,21/hd0,22/g.
>
>> That syntax is apparently correct, as legacy_kernel needs to know what
>> the original legacy command was.
>> I have tested here in a clean mga3 installation and it works for me.
>
>> Please re-test and if it fails again please attach the original menu.lst
>> and the resulting grub.cfg along with any error messages.
>
> It's entirely unclear what "re-test" here means, unless maybe by
> incorporating your immediately preceding thread response. Current
> behavior of Grub2 menu overall and first grub.cfg stanza is acceptable
> having used/using the following:
>
> http://fm.no-ip.com/Tmp/Linux/Mdv/menu.lst.04-cldrn-gx27b.txt
>
> http://fm.no-ip.com/Tmp/Linux/Mdv/etc-default-grub-cldrn-gx27b.txt
>
> http://fm.no-ip.com/Tmp/Linux/Mdv/grub.cfg.06-cldrn-gx27b.txt
>
> Only error message I recall is about vga= from Grub2 before first
> kernel/init messages appear.

I was referring to re-testing the use of grub2-menulst2cfg again, since 
it works perfectly here.

If you truly get errors from the grub.cfg produced by it then I would 
like to report this upstream. I suspect there is something slightly 
unusual in your menu.lst that it can't handle, so we will need both 
menu.lst and the output .cfg, plus any error messages that may be useful.

Since your comments earlier I have decided to split out the theme into a 
separate package, so that a minimal installation using grub2 will not 
pull in the font, image etc.

I have pushed a new version that Suggests: os-prober in the meantime.

So, in future an install of grub2 with --no-suggests will be without a 
theme or os-prober, and perform as per the modifications I suggested above.

Thanks for your constructive comments Felix,

Barry