124 Troubleshooting
Suggested solutions
Remove Real Mode (DOS) drivers for the DVD-ROM drive. Real mode CD-
ROM drivers may interfere with proper DVD-ROM operation. Real mode
drivers for the CD-ROM are only required if you wish to access the CD-
ROM from DOS. Look in the CONFIG.SYS file for CD-ROM drivers that may
be loaded.
Following are some examples of “DEVICE=” lines that load REAL MODE
CD-ROM drivers.
DEVICE=C:\SBCD\DRV\SBIDE.SYS /D:MSCD001 /P:170,15 /V
DEVICE=c:\bin\AOATAPI.SYS /D:MSCD003
Device=C:\DEV\AOATAPI.SYS /D:mscd000
To determine if the CD-ROM driver is the source of the problem, simply edit
the CONFIG.SYS file and add the letters “REM” to the beginning of the
“DEVICE=” line. (e.g. REM DEVICE=CR_ATAPI.SYS /D:MSCD0001). Save
the CONFIG.SYS file, reboot the system and see if the problem still occurs.
NOTE: the REAL MODE CD-ROM driver is not usually required for
Windows 98 to access the CD-ROM drive. The REAL MODE driver is only
required to access the CD-ROM when booting to DOS MODE.
Disable UDMA support in CMOS. Some motherboards do not function
properly when the built-in UDMA support is enabled. In some cases,
Windows DMA support will not appear in Device Manager when UDMA is
enabled in CMOS.
1 Turn on your PC, and press the Del key or the F2 key to enter the CMOS
setup screens. (Different BIOS makers may use a different key; check
the screen for a message that tells you which key to use.
2 Disable UDMA support for all IDE devices; for example, an Award BIOS
under Integrated Peripherals typically shows:
IDE primary Master UDMA AUTO <
(Change to Disable.)
IDE Primary Slave UDMA AUTO <
(Change to Disable.)
IDE Secondary Master UDMA AUTO <
(Change to Disable.)
IDE Secondary Slave UDMA AUTO <
(Change to Disable.)
Save the new settings, then exit CMOS setup.