Re: grub2/grub-pc install not possible on mdadm

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Hi John,

Am Mon, 05 Mar 2012 09:38:34 +0000
John Robinson <john.robinson@xxxxxxxxxxxxxxxx> schrieb:
> On 05/03/2012 07:50, Stefan Priebe - Profihost AG wrote:
> > Am 02.03.2012 16:32, schrieb Lars Täuber:
> >> Hi Stefan,
> >>
> >> the metadata versions 1.0 and 1.1 and 1.2 are the same but for the
> >> position of the metadata on disk. Simply use metadata version 1.0 and
> >> everything works as with 0.9.
> >>
> >> Grub does to read partition tables inside raid devices.
> 
> Sure it does, but that's not the point.

that's new to me. This is true for grub2 only?
You mean if Stefan would have used an old fashioned partition table inside a
Linux SW-RAID with metadata 1.2, grub would have booted like normal?

 
> >> Because a raid1 with metadata 1.0 or 0.9 looks like a plain disk to grub
> >> it can read a partition table like there was no raid array.
> 
> For the fourth time, no.
>
> Because a RAID1 with metadata 0.9 or 1.0 looks like a plain disc to the 
> BIOS, it can read a partition table like there was no RAID array, and 
> therefore the BIOS can load GRUB.

This might be true for UEFI firmware but for the plain old BIOS too?
I thought the BIOS isn't interested in partitions at all.

Lars
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