Re: RAID b/w GPT and NON GPT partition.
pascal@plouf.fr.eu.org wrote:
>Christian Seiler a écrit :
>>
>> So if you want to boot from GPT partitions, you need to have a
>> small-ish (I typically use 100-200 MB or so) FAT32 partition of
>> the "BIOS Boot Partition" type at the beginning of the drive.
>> That's where the boot loader will be installed. (And you need
>> EFI to boot that.)
>
>You are confusing the "BIOS boot partition" with the "EFI system
>partition" needed to boot from UEFI firmware in native mode.
>
>The "BIOS boot partition" can be as small as ~50 kB or even less (it
>replaces the MBR gap which used to be 32 KiB) and is used by grub-pc to
>boot from BIOS (or UEFI in legacy/CSM mode).
But there's not much point going smaller than 1MB or so, and it will
give you a bit of breathing space in case things grow.
>Even the EFI system partition does not need to be that big for Debian.
>The bootloader size installed by grub-efi-amd64 is less than 1 MB.
*Please* don't rely on that - it's only likely to grow in size. And if
you ever want to dual-boot or do other things that might use space on
the ESP you'll be screwed. The official recommended minimum size for
the ESP is 512 MiB, and that's what we use by default in d-i.
>Also, there is no strict requirement that the EFI system partition must
>be at the beginning of the disk. This is just a precaution against
>possibly broken UEFI firmwares.
Agreed.
--
Steve McIntyre, Cambridge, UK. steve@einval.com
"Further comment on how I feel about IBM will appear once I've worked out
whether they're being malicious or incompetent. Capital letters are forecast."
Matthew Garrett, http://www.livejournal.com/users/mjg59/30675.html
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