Re: [RFC] mount can figure out fstype automatically

On Tue, Jul 11, 2006 at 09:54:00AM -0400, John Baldwin wrote:
On Tuesday 11 July 2006 09:27, Ceri Davies wrote:

Assuming that there is a valid partition type. I don't really know what
this makes, but there's a valid FAT filesystem on it:

% truncate -s 1440k floppy
% sudo mdconfig -a -f floppy
md1
% sudo newfs_msdos -f 1440 /dev/md1
/dev/md1: 2847 sectors in 2847 FAT12 clusters (512 bytes/cluster)
bps=512 spc=1 res=1 nft=2 rde=224 sec=2880 mid=0xf0 spf=9 spt=18 hds=2 hid=0
% sudo mount -t msdos /dev/md1 /mnt
% df -h /mnt
Filesystem Size Used Avail Capacity Mounted on
/dev/md1 1.4M 1.0K 1.4M 0% /mnt
{ceri@shrike}-{~} % fdisk /dev/md1
******* Working on device /dev/md1 *******
parameters extracted from in-core disklabel are:
cylinders=0 heads=255 sectors/track=63 (16065 blks/cyl)

parameters to be used for BIOS calculations are:
cylinders=0 heads=255 sectors/track=63 (16065 blks/cyl)

Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
<UNUSED>
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>

Ceri

Dos floppies don't have an MBR (so fdisk on them is meaningless).

That agrees with observation :) Thanks!

Ceri
--
That must be wonderful! I don't understand it at all.
-- Moliere

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