An ATAPI drive on the second IDE channel. DOS needs an ATAPI driver (UDVD2, for
example) and MSCDEX; Linux finds it as /dev/hdc.
DOS needs EMUCD.SYS from the driver disk and MSCDEX (README.TXT on the disk says
how).
The image is read from the file as it is needed; load it again after a reload of the page.