Date: Sat, 30 Aug 2008 10:57:53 +0200 From: "Paul B. Mahol" <onemda@gmail.com> To: "Alexey Shuvaev" <shuvaev@physik.uni-wuerzburg.de> Cc: freebsd-current@freebsd.org Subject: Re: Booting from gpt on i386/amd64? Message-ID: <3a142e750808300157ld976e81hd68cdabb0f587bf5@mail.gmail.com> In-Reply-To: <20080829213208.GA41069@wep4017.physik.uni-wuerzburg.de> References: <20080829205313.GA30330@wep4017.physik.uni-wuerzburg.de> <3a142e750808291416o25b6678bm2b6fa75d0f8e4714@mail.gmail.com> <20080829213208.GA41069@wep4017.physik.uni-wuerzburg.de>
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On 8/29/08, Alexey Shuvaev <shuvaev@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@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@ for more info. > (and the kernel too). > > Thanks for the reply, > Alexey. >
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