Can I use a USB floppy on Solaris ?
Yes, but it will show up as a (very small) scsi disk. check /dev/dsk/c... nodes. There are no /dev/diskette nodes for usb floppy.
If the floppy has no filesystem, do the following.
# /etc/init.d/volmgt stop
Plug in the device and run rmformat(1M). It will show you the device node for the USB floppy. Assume it is /dev/rdsk/c4t0d0p0 (x86).
# mkfs -F pcfs -o nofdisk,size=2800 /dev/rdsk/c4t0d0p0
# mount -F pcfs /dev/dsk/c4t0d0p0:c /mnt