Apple 8600 appendix Before you connect a Scsi device, Make sure each device has a unique ID number

Before you connect a SCSI device

Before you connect a SCSI device to your Macintosh, be sure to complete the tasks explained in this section.

IMPORTANT This section contains general instructions for attaching SCSI devices to your computer. Be sure also to follow the specific instructions that came with your external hard disk drive or other SCSI device when connecting the device to your Macintosh. The specific instructions that came with the device tell how to change a device’s ID number and attach a SCSI cable or terminator to it.

Make sure each device has a unique ID number

Each external SCSI device connected to your computer must have its own, unique ID number from 0 to 6. The SCSI ID number helps the computer keep track of the devices and sort out conflicts when more than one device in the SCSI chain is communicating with the computer simultaneously.

The SCSI devices can be in any physical order in the chain; it is not necessary to arrange them in numerical order.

See the instructions that came with each SCSI device for information on checking and setting its SCSI ID number.

IMPORTANT If you use two or more devices attached to the same SCSI interface with the same ID number, your computer will not start up properly, your equipment could malfunction, and you could lose data as a result.

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