On Wednesday 12 May 2010 21:47:41 Paul Hartman wrote: > On Wed, May 12, 2010 at 3:00 PM, Mick <michaelkintz...@gmail.com> wrote: > > On Monday 10 May 2010 17:01:02 Paul Hartman wrote: > >> On Sat, May 8, 2010 at 9:16 AM, claude angéloz > >> > >> <claude.ange...@bluewin.ch> wrote: > >> > Hello, > >> > > >> > I installed a gentoo on a very recent system (efi support) . AT the > >> > reception of the laptop it was a disk label msdos, with a boot > >> > partition w** installer ... I changed that against a GPt disk label. > >> > I can install without problem the gentoo , but now it doenst boot. > >> > > >> > I read some docs about gpt,mbr,boot principles and tried some tools > >> > > >> > - install the grub2 masked package and grub-install. > >> > > >> > - a special partion bios_grub as 1st bootable partition. > >> > but actually no succesful... > >> > but in the parted i did not see this "bios_grub" as flag... > >> > > >> > I found some tips from the web , but i guess that was only valid for > >> > a macintel system, not a normal pc with a disk labeled gpt and an efi > >> > support. > >> > > >> > I know that it is not required an efi partiton to boot the os with > >> > pc/bios and gpt disk. Or is it false ? > >> > > >> > If anybody has an other idea. Or I must abandon the gpt disk label ? > >> > Is there an equivalent refitr in OS x86 ? > >> > >> I'm using GPT partitions and with the grub-0.97-r9 in Gentoo it has > >> patches to boot from GPT disks. I just did normal grub install as > >> usual and everything seems to work. I'm not using the partition label, > >> though, but only "root (hd0,0)" > > > > Interesting. Does grub install its bootloader into the MBR, or in a GPT > > boot partition? I am not at all familiar with this new way of booting > > systems. > > I think basically GPT is a replacement for MBR, everything basically > works the same way otherwise. GPT has features like redunancy, removes > limits of MBR (no primary/logical designation anymore, no 2TB limit, > etc). I think it has a somewhat MBR-compatible layout in the first > sector so non-GPT-aware things can still partially recognize it.
Am I right to assume that your 1st partition on the 1st disk is the GPT boot partition and therefore its 1st sector is what would on a conventional disk be the MBR? -- Regards, Mick
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