Re: Installation use of fdisk, triple boot

From: Dave Uhring (daveuhring_at_yahoo.com)
Date: 07/28/04 

Date: Wed, 28 Jul 2004 13:51:30 -0500

On Wed, 28 Jul 2004 11:17:10 -0700, GlowOfSunsetREMOVE@Yahoo.com wrote:

> Dave Uhring <daveuhring@yahoo.com> wrote in message news:<pan.2004.07.28.02.43.32.861430@yahoo.com>...
>> On Tue, 27 Jul 2004 17:08:39 -0700, GlowOfSunsetREMOVE@Yahoo.com wrote:
>>
>> > OpenBSD 3.5, Linux FC1 and XP Pro installation.
>>
>> > With regard to fdisk: I am setting up a triple boot system and have
>> > faced some problems partitioning with FDISK under OpenBSD.
>>
>> Wrong plan. Partition your drive using Linux fdisk before booting the
>> OpenBSD floppy or CD.
>>
>> Then use lilo as the multi-boot selector.
>
> Thank you for the response Dave, I will take the advice you have
> given.
>
> This might seem obvious but I am going to ask the following given that
> I am not looking at the OpenBSD fdisk help menue at this time.
>
> I assume that the partitions will be created as something other than
> a6 using Linux fdisk.

Linux fdisk will mark the partitions as type 83 by default. Just change
your intended OpenBSD partition type to a6 before writing the partition
table.

>
> Do I
> (1)leave the partition falling on the extended partition as "f" and
> hence a Linux formatted partition exists in the first extended
> partiton,

Not sure why you want type 0f as your extended partition. If only Linux
resides there then the type should be 85, otherwise XP will attempt to do
nasty things there.

> (2)change that first partition to a6 or
> (3)save the partitions listed under OpenBSD fdisk and go directly to
> disklabel.

If you have your partition table correct then just hit "Q" when the
OpenBSD installer pops up the fdisk screen and it will go to the disklabel
editor.

> I'm still sort of hung up on what to do/think with regard to the first
> extended partition and how the system will properly handle it. I'll
> take a look at the system again today...it's going on hell or high
> water.

Here is the partition table I use. Presently Solaris 10 resides in the 2d
primary partition. Windoze prefers to have the first partition.
OpenBSD-3.5 can be installed past the previous 8GB limit now. Normally I
install OpenBSD as the only OS on a hard drive but I have had v3.5
installed where Solaris now resides.

[root]# fdisk -l /dev/hda

Disk /dev/hda: 30.0 GB, 30020272128 bytes
255 heads, 63 sectors/track, 3649 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot Start End Blocks Id System
/dev/hda1 1 1095 8795556 7 HPFS/NTFS
/dev/hda2 * 1096 2190 8795587+ 82 Linux swap
/dev/hda3 2191 3649 11719417+ 85 Linux extended
/dev/hda5 2191 2410 1767118+ 83 Linux
/dev/hda6 2411 2473 506016 82 Linux swap
/dev/hda7 2474 2505 257008+ 83 Linux
/dev/hda8 2506 3090 4698981 83 Linux
/dev/hda9 3091 3649 4490136 83 Linux

Also, I just noticed that you are using FC1 and not some Linux distro
which normally uses lilo. So if you are using GRUB I have no help for
you; been using lilo for too long. In fact I use Slackware, which does
not even have GRUB.

I should also mention that your plan was wrong because the last time I
used OpenBSD's fdisk for a multi-boot system it could not handle drives
larger than 8GB and really made a mess of the partition table on a large
drive.

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