HP 6000 330s Owner's Manual page 86

Models 330S and 660S HP Series 6000
Rewritable optical disks are 5.25 inches in diameter and
are made from a polycarbonate material coated with a
magnetic layer on both sides, where data is stored in
digital format. The disk is mounted in a rigid plastic case
sinlilar to a 3.5-inch magnetic flexible disk (see Figure 3-1).
Rewritable optical disks have two recording sides, with a
. data capacity of 325 megabytes per side, for a total capacity
of 650 megabytes per disk. Because the rewritable optical
disk drive contains only one read/write head, a disk must
be ejected, turned over, and loaded into the disk port again
to access the other side.
Data is stored and retrieved through a window beneath the
shutter (see Figure 3-1). When you load rewritable optical
disk into the disk port, the shutter opens automatically to
expose the disk surface. When you eject the disk from the
disk port, the shutter closes over the window to protect the
disk surface.
Do not open the shutter manUally. Opening the shutter
will expose the surface of the disk to dust, which. will
reduce the reliability of the read/write head in the
rewritable optical disk drive.
3-2 Rewritable Optical Disk Drive