Re: Booting from gpt on i386/amd64?

From: Paul B. Mahol <onemda_at_gmail.com>
Date: Sat, 30 Aug 2008 10:57:53 +0200
On 8/29/08, Alexey Shuvaev <shuvaev_at_physik.uni-wuerzburg.de> wrote:
> On Fri, Aug 29, 2008 at 11:16:07PM +0200, Paul B. Mahol wrote:
>> On 8/29/08, Alexey Shuvaev <shuvaev_at_physik.uni-wuerzburg.de> wrote:
>> > Hello list!
>> >
>> > I have tried to install a system with pure gpt partitioning,
>> > but haven't managed to boot from it.
>> >
>> > Is it my local problem?
>> > What is the correct procedure of preparing gpt-only BIOS-bootable
>> > system?
>> >
>>
>> You have all following lines (from gpart manual) in your >> custom <<
>> kernel?
>>
>> options GEOM_PART_APM
>> options GEOM_PART_BSD
>> options GEOM_PART_GPT
>> options GEOM_PART_MBR
>> options GEOM_PART_PC98
>> options GEOM_PART_VTOC8
>>
> No, I am using GENERIC kernel. Is it neccessary to have *ALL* of them?
> I mean GENERIC have essential ones:
>
>> grep GEOM GENERIC
> options         GEOM_PART_GPT           # GUID Partition Tables.
> options         GEOM_LABEL              # Provides labelization
>
> Man page also says:
>
> [snip]
> To add support for the disk partitioning GEOM class, place one or more of
> the following lines in your kernel configuration file:
> [snip]

That is different from "booting from gpt"

At least I think that you must have GEOM_PART_MBR to boot from gpt.

>
> I can compile custom kernel with all the above options, but it seems to me
> that the system freezes before passing execution to loader(8)

Ask marcel_at_ for more info.

> (and the kernel too).
>
> Thanks for the reply,
> Alexey.
>
Received on Sat Aug 30 2008 - 06:57:53 UTC

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