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Windows 98 issues

Known Issues

  • In some cases, each channel of a MultiChannel adapter must be updated/installed manually with the aic78xx.mpd driver on a freshly installed Windows 98 system. Please follow the instructions listed under Updating the Driver for Windows 98 for each channel.
  • Real mode ASPI drivers from EZ-SCSI are not needed, because Windows 98 miniport drivers support most SCSI host adapters and SCSI devices. However, you will need to load the ASPI drivers (including MSCDEX.EXE, if you have CD-ROM drive) if any of the following are true:
    • You are running in MS-DOS mode and need to access your CD-ROM drive.
    • You are using a scanner or another SCSI device with CONFIG.SYS or AUTOEXEC.BAT based drivers, such as HP's SJIIX.SYS.
    • You have an older model SCSI-1 CD-ROM driver that Windows 98 does not support.
    • You are using a CD-Recorder drive (however, some newer models of CD-Recorder drives can use the embedded Windows drivers).
  • Some older models of SCSI CD-ROM drives are not compatible with the embedded Windows 98 CD-ROM driver. You can add support for the CD-ROM drive by doing the following:
    1. Make sure your ASPI real mode drivers (including ASPI8DOS.SYS, ASPICD.SYS and MSCDEX.EXE) are loaded and running from your CONFIG.SYS and AUTOEXEC.BAT files. Consult your EZ-SCSI installation guide for more details.
    2. If step 1 did not work, find the file named CDTSD.VXD in the \windows\system\iosubsys directory and rename it to CDTSD.SAV.
  • The mapping between MSCDEX.EXE, which runs in real mode, and the Windows 98 CD-ROM driver does not match. You can correct this in one of two ways:
    1. Comment out the line that loads mscdex.exe in the autoexec.bat file.
    2. Change the /L switch on the line that loads mscdex.exe in the AUTOEXEC.BAT file so it assigns the CD-ROM drive the next highest logical drive letter after the hard disk drives.
  • Windows 98 does not support sharing of system interrupts (also known as IRQs) between two or more I/O subsystem devices (i.e. network interface cards or hard disk adapters such as SCSI host adapters). When IRQs are shared between I/O devices, lockups can occur while booting. If lockups occur, try moving or removing one or more PCI cards from one slot to another and bootup your computer again. If problems continue, refer to your system documentation and/or your system technical support for information on adding your system configuration.
  • When updating/installing the driver for a host adapter, the Family Manager Set will not automatically install both Ultra2 and Ultra/Fast drivers. If you require both drivers, you will have to install them seperately, as per individual host adapter. For example, after installing the driver for the AHA-2940U2W, there may be a conflict in the Device Manager with an existing or newly-installed Adaptec UltraSCSI or earlier host adapter. To resolve this problem, simply update the driver for the conflicting host adapter with the Family Manager Set v3.02.2 driver from the Device Manager.