[Gllug] Fdisk in a pure Linux environment

Philip Hands phil at hands.com
Fri Jan 6 09:41:21 UTC 2012


On Fri, 6 Jan 2012 07:55:40 +0000, Alain Williams <addw at phcomp.co.uk> wrote:
> On Fri, Jan 06, 2012 at 07:11:54AM +0000, John Winters wrote:
> 
> > One thing to be aware of (which caught me out the first time I tried) is 
> > that if you have a large (>= 2TB) drive which you intend to use for 
> > booting Linux with grub then you must create a small partition of type 
> > "bios_grub" at the beginning of the disk or else grub won't be able to 
> > install itself.
> 
> Type 'bios_grub' - what is that ? I can't see one of those as a choice when
> I run fdisk ?

That's because you want gdisk got GPT support (or parted IIRC)

=-=-=-=-=-
phil at sheikh:~$ sudo gdisk -l /dev/sda
GPT fdisk (gdisk) version 0.8.1

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): BCC3E33C-A548-0BFA-8253-F43FC2091902
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 8-sector boundaries
Total free space is 0 sectors (0 bytes)

Number  Start (sector)    End (sector)  Size       Code  Name
   1              34            1987   977.0 KiB   EF02  BIOS boot partition
   2            1988          501988   244.1 MiB   FD00  Linux RAID
   3          501989         2097151   778.9 MiB   FD00  Linux RAID
   4         2097152      1050673151   500.0 GiB   FD00  Linux RAID
   5      1050673152      2099249151   500.0 GiB   FD00  Linux RAID
   6      2099249152      3147825151   500.0 GiB   FD00  Linux RAID
   7      3147825152      3907029134   362.0 GiB   FD00  Linux RAID
=-=-=-=-=-

There you go --- type EF02 is the type -- if you were expecting that to
work with fdisk you've got a spot of catching up to do ;-)

Cheers, Phil.
-- 
|)|  Philip Hands [+44 (0)20 8530 9560]    http://www.hands.com/
|-|  HANDS.COM Ltd.                    http://www.uk.debian.org/
|(|  10 Onslow Gardens, South Woodford, London  E18 1NE  ENGLAND
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