On Sun, 4 Dec 2005, Stephen Beaver wrote:
> Thanks Matt.
>
> After rebooting the system, I did see an improvement. USB mass storage
> devices now all seem to report ${INTERFACE} = 8/6/80
That should have been there all along. But as long as it's working now...
> and this code in
> /sbin/hotplug:
>
> usb)
> if [ ${INTERFACE%/*/* = "8" ] ; then
> if ( ! mount -t vfat /dev/sda1 /mnt/memstick ) ; then
> mkdosfs -I /dev/sda1
> if ( ! mount -t vfat /dev/sda1 /mnt/memstick ) ; then
> echo "Unable to mount/format this device"
> fi
> fi
> fi
> ;;
>
> seems to be a reliable way to do what I need.
>
> It's working well, at least for small devices. (mkdosfs doesn't seem to like
> sticks > 64 MB though)
You probably need to use the -F32 flag, to force mkdosfs to create a
VFAT32 filesystem.
> Where might I find the documentation on these issues? - I have searched
> everywhere I know and not really found anything yet.
The interface descriptors should be described in any book about USB. The
canonical reference is the USB 2.0 Specification (chapter 9), available at
www.usb.org. You may also be interested in the Mass Storage class
specification.
mkdosfs is described in its man page.
Alan Stern
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