what kind of interface to the burner? scsi, usb, firewire, paralell (printerport on a PC)?
the usb stick might be called ubX or sdX (where X is a number from 1-9 iirc) .
and you might mount it with comand below.
first we assume your drive is ubX
Code:
mkdir /mnt/ubX
Code:
sudo mount -t vfat /dev/ubX /mnt/ubX -o rw
now we asume it is sdX
Code:
mkdir /mnt/sdX
Code:
sudo mount -t vfat /dev/sdX /mnt/sdX -o rw
this should work in 90% of cases.
to find what your stick is called perhaps
Code:
dmesg|grep usb
might help or
Code:
fdisk -l
these tewo comands will list a bunch of outputl look for lines like this (from my computer after i incert a usbstick)
dmesg|grep usb
...
usb 1-4.3: new full speed USB device using ehci_hcd and address 4
usb-storage: device found at 4
usb-storage: waiting for device to settle before scanning
usb-storage: device scan complete
and
fdisk -l
...
Disk /dev/sda: 65 MB, 65536000 bytes
50 heads, 32 sectors/track, 80 cylinders
Units = cylinders of 1600 * 512 = 819200 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 80 63984 6 FAT16
these two qoutes are somewhat shortened, you most likely get some more lines.

hope this helped you