Re: [gentoo-user] Grub, gpt partitions and BIOS, not uefi thing.

[Wojciech Kuzyszyn <wkuz@op.pl>]

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On Sat, 27 Apr 2024 11:53:25 -0500
Dale <rdalek1967@gmail.com> wrote:

> Howdy,
> 
> I'm installing Gentoo on another old box.  To be consistent I like to
> use cgdisk, GPT I think it is called, to partition all my drives,
> regardless of size.  Thing is, Grub works differently with GPT than it
> does with the old DOS or whatever it is called, like fdisk does in the
> old days.  I did some research but still find myself in some muddy
> waters.  My take on some things I've read, I need a boot partition,
> not to be confused with the /boot for kernels, init thingys and such.
>  Where I get lost, most use gdisk.  I like cgdisk.  Before that I
> liked cfdisk.  Anyway, how do I set up that partition with cgdisk?
> Any minimum size requirements or tiny is enough?  Does it have to be a
> specific type?  Does it need to be in a specific place?  Formatted
> with a file system?  Also, when I do grub-install, do I still point to
> /dev/sda or to /dev/sda1, if sda1 is the special boot partition?
> 
> I tried to find a step by step howto with this info but the ones I
> find either don't work or leaves me more confused.  Given that the
> method is also aging out, it's hard to find good guides.  I'd be real
> happy just to have a link to a good howto that I can make sense of.
> I can save a copy local and even print it.  Maybe someone has some
> notes that will help.  I just need something to help clear up the
> muddy waters. 
> 
> Thanks to anyone who has a link, some notes or something.  :-D 
> 
> Dale
> 
> :-)  :-) 
> 

I don't use cgdisk nor gdisk. Here's a link to Arch's wiki about GPT on
BIOS systems:

https://wiki.archlinux.org/title/GRUB#GUID_Partition_Table_(GPT)_specific_instructions

I guess you need to set the same code as in gdisk, or something similar
to BIOS boot or bios_grub as are in other such tools.

Good luck!

Wojciech

-- 
xWK

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