My understanding for the use of primary partition 4 : it's for legacy Apple Mac compatibility. If forget the exact details, but MacOS used the first 3 partitions for various stuff : boot, drivers, and something else. Partition 4 was actually where the apps and data went.
I know it's certainly the case for Zip disks. It was explained to me by an Iomega employee friend of mine. On Wed, 13 Mar 2002, Keith Winston wrote: > 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 > Got spam? Get SPASTIC http://spastic.sourceforge.net > > _______________________________________________ > [EMAIL PROTECTED] > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users > > _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
