ASUS High-Speed DVD-ROM Drive
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V
.T
roubleshooting
V. TROUBLESHOOTING
SOLUTIONS 1. Upgrade your benchmarking utility to one that supports tests
on the outer tracks of your drive. Your DVD-ROM Drive uses
Constant Angular Velocity (CAV) technology, wherein the
spindle motor is running at the same velocity, while the drive is
accessing data at the inner or outer tracks. In this way, the drive
will achieve lower data transfer rates at the inner tracks and
higher transfer rates at the outer tracks. Thus using some or
older benchmarking utilities, such as WinBench 96, will give
lower data transfer rates because these utilities use the drive’s
inner tracks for its performance tests.
2. A disc will occupy only the inner tracks when it is not full.
Thus, because of the way your DVD-ROM Drive accesses data
(see preceding explanation on CAV technology), the drive will
achieve lower data transfer rates. Use a full disc if possible to
get the maximum transfer rate from your drive.
3. Change the transfer mode of your DVD-ROM Drive to Multi-
word or Ultra DMA Mode to maximize its capability.
• For DOS, see Custom Setup under SOFTWARE INSTAL-
LATION for more information.
• For Windows 95 or Windows NT, Bus Master driver must
be installed. Unless your computer dealer installed the driver
when you bought it or your motherboard supports Bus Master
mode, Windows will not use bus mastering for your CD-
ROM Drive.
• Click My Computer | Control Panel | System | Device
Manager | CD-ROM controllers. If you are using the bus
master, PCI Bus Master will be displayed. If not and your
motherboard has the new PCI controller chipsets from Intel,
for example, the 430TX or 440BX, but does not have a
CMOS setting for Bus Master mode, you may have to get
the driver from Intel. Check with your dealer for more
information.