Hi,

I am looking for the answer to a small question that is bugging me.  I have
searched the recent archives and google without finding the answer.

I currently use three USB mass storage devices (digital camera, diskonkey
flash, hipzip MP3 player) and they all work great on my Linux system.

I have read the USB docs and a little code so I understand that the system
creates SCSI devices for the mass storage type USB devices.  The thing
I don't get is why some devices appear on partition 1 and others appear
on partition 4 of the emulated SCSI device.

For example, when I use the devices one at a time, here are the device names
that get assigned:

Nikon Coolpix 775 camera --> /dev/sda1
DiskOnKey --> /dev/sda4
Hipzip --> /dev/sda4

I can see all the entries created in /proc/scsi/scsi and 
/proc/bus/usb/devices.  The /proc/scsi/scsi entries let me see which
SCSI disk to use (sda, sdb, etc.) but I can't tell other than trial and
error which partition to use.

Does it have something to do with the way the device is formatted? 
Or the existence or non-existance of a partition table?
Of course, every one of my devices is foramtted as vfat to start with.

Anyway, sorry about the long rambling.

Thanks in advance,
Keith
-- 
LPIC-2, MSCE, N+
you may say I'm a dreamer, but I'm not the only one
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