trying to set up multiboot system with W2k, Linux and FreeBSD

bas · *nix forums addict Joined: 09 Jun 2005 Posts: 79

/dev/md0? What does freebsd fdisk say about the disk that you will
install to, ad0 (or ad1 or da0 or one of those devices)?

onetitfemme · *nix forums beginner Joined: 12 Oct 2005 Posts: 23

Hi *,

I had a Windows 2k FAT32 installation which I halved using
knoppix/parted.

In the rest of the disk I made space for a Linux partition and a
FreeBSD one using Linux/Debian/fdisk. I want to then multiboot all
three OSs using grub

Linux I could easily install using debootstrap, then I made the last
(dedicated to FreeBSD) partition active and tried to install FreeBSD
6.0 there, but FreeBSD's fdisk is showing me a disk information that
does not look like what I have. So I stopped, because I didn't want to
lose my data.

I thought all I would see was the space of the partition set active,
but FreeBSD is actually seeing all hd space its way. I must not destroy
the previous partitions/installations.

I know fdisk is different in all OSs that use it, Linux fdisk 'thinks'
in terms of cylinders/partitions while FreeBSD's in sectors/slices. Do
you know of any good info that would let me understand the different
fdisk idiosyncrasies and how they map to hds internals (at least IDE
ones)?

Thanks
otf

// - - - - - - - - using Linux
sh-3.00# whoami
root
sh-3.00# fdisk -l

Disk /dev/hda: 13.5 GB, 13578485760 bytes
16 heads, 63 sectors/track, 26310 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes

Device Boot Start End Blocks Id System
/dev/hda1 * 1 12190 6143728+ c W95 FAT32 (LBA)
/dev/hda2 12191 18191 3024504 83 Linux
/dev/hda3 18192 26310 4091976 a5 FreeBSD

// - - - - - - - - using FreeBSD
******* Working on device /dev/md0 *******
parameters extracted from in-core disklabel are:
cylinders=3 heads=255 sectors/track=63 (16065 blks/cyl)

parameters to be used for BIOS calculations are:
cylinders=3 heads=255 sectors/track=63 (16065 blks/cyl)

fdisk: invalid fdisk partition table found
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 63, size 48132 (23 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 2/ head 254/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>

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