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SCSI Problems I Think

Posted on 1998-11-04
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Question by:Silverbrain
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by:Silverbrain
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sgenther earned 100 total points
ID: 1646985
Try these things:
his section includes problems that might occur with SCSI devices.
A SCSI device fails to work.
The SCSI and CD-ROM support built into Windows 98 requires that CD-ROM drives provide SCSI parity to function properly. For many drives, this is a configurable option or is active by default. Examples of drives that do not provide or support SCSI parity are the NEC CDR-36 and CDR-37 drives.
If you have trouble with a SCSI drive, make sure the SCSI bus is set up properly (refer to your hardware documentation for specific details).
In some cases, adding or removing a SCSI adapter might prevent your computer from starting correctly. Check the following:
·      The ends of the SCSI bus must have terminating resistor packs (also called terminators) installed.
      If you have only internal or only external SCSI devices, the ends of the bus are probably the SCSI adapter and the last device on the cable. If you have both internal and external SCSI devices, the adapter is probably in the middle of the bus and should not have terminators installed. If you disconnect a device that has terminators installed (such as an external CD-ROM drive), be sure to install terminators on whatever device then becomes the last one on the bus. One of the devices on the SCSI bus (usually the adapter) should be configured to provide termination power to the bus.
      Windows 98 supports as many internal and external SCSI devices as the SCSI controller supports. In addition to the requirement that the last external and the last internal SCSI device be terminated, some hardware has additional requirements for where it must be placed in the SCSI chain.
·      Removable media must be mounted on the drive before running Setup.
      If you have a SCSI removable media device, such as a cartridge drive, make sure the media are mounted on the drive before running Setup. If no media is mounted on the drive, errors might occur during Setup that prevent installation of Windows 98.
 
A SCSI device works with MS-DOS but not Windows 98.
For many SCSI hardware devices, you can specify command-line parameters when the driver is loaded. By default, the Windows 98 miniport driver runs without parameters (in the same way it does for real-mode drivers). If you want to use a command-line parameter, if the device has a Windows 98 MPD file, you can add the parameter to the Settings tab in the Properties for the SCSI controller.
For information about the switches that can be used for a particular SCSI device, see the documentation from the device manufacturer. There are no additional parameters added by Microsoft.
For example, if your SCSI adapter has full functionality under MS-DOS but not under Windows 98, you can add any device parameters previously specified in Config.sys to the Adapter Settings box. As another example, for Adaptec 7700 SCSI devices, you might specify removable=off to disable support for removable media if you want to load another ASPI removable disk.

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