TITLE
    SCSI Troubleshooting: Hardware and Software Conflicts
Article ID:
Created:
Modified:
3700
5/17/89
5/17/89

TOPIC


DISCUSSION



    Connecting SCSI devices to the bus and installing their associated drivers
    and INITs sometimes raise interesting issues. Improper termination is
    typically the root of hardware conflicts. A less likely reason is
    forgetting to set the SCSI priority number to a unique number, or using a
    device that improperly "provides" built-in termination, or improperly
    powers the terminators. Do not overlook damaged cables, terminators, or the
    terminator power source.

    The system could also be running out of memory. Configuring a start-up disk
    with minimal drivers and INITs or adding more RAM may help test that
    theory.

    Software conflicts typically result from INITs clobbering one another at
    startup, possibly due to poor memory management. Often, you can isolate a
    troublesome INIT by removing all extraneous INITs, then systematically
    adding each one back into the System Folder, one at a time, until you can
    no longer start up or use a device.

    Also, you can often eliminate the conflict by renaming the INIT (or files
    that contain INITs in their Resource Fork) so that they install in a
    different order. (INITs and drivers are installed alphabetically.) For
    example, you could rename the Apple Scanner INIT to "aScanner" to get it to
    load sooner.

    Note that there are some INITs (like Dyna File) that won't work if renamed.
    If this is the case, and the INIT conflicts with the Apple Scanner, you may
    have to remove the INIT from the System Folder when you're going to use the
    Apple Scanner.



Document Information
Product Area: Computers; Peripherals
Category: Cables
Sub Category: SCSI

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