What do the SCSI ID numbers mean?
SCSI ID numbers identify devices on the SCSI chain. Each device should have its own, unique ID number in the range 0-7. (If two devices on the SCSI chain have the same ID number, there will be a conflict and your system will not function correctly.) Higher numbered devices have higher priority– get ‘looked for’ first– so, it is standard practice to set the device you boot from to 6 or 7. Most external SCSI devices have a thumbwheel switch, slide switch, or jumper block on the back to set ID number. Some, like the Creative x2 CD-ROM drive let you click through 0-7. The Zip Drive lets you pick 5 or 6. (By the way, SCSI ID numbers have nothing to do with which Slot the SCSI interface card is in.) ————————— From: David Empson SCSI ID 7 is usually special because the Apple SCSI and Hi-Speed SCSI cards count as a device set to ID 7 by default (and every Macintosh has a hard-wired SCSI ID of 7). The only thing that is special about ID 0 is that it is the standard ID used f
SCSI ID numbers identify devices on the SCSI chain. Each device should have its own, unique ID number in the range 0-7. (If two devices on the SCSI chain have the same ID number, there will be a conflict and your system will not function correctly.) Higher numbered devices have higher priority– get ‘looked for’ first– so, it is standard practice to set the device you boot from to 6 or 7. Most external SCSI devices have a thumbwheel switch, slide switch, or jumper block on the back to set ID number. Some, like the Creative x2 CD-ROM drive let you click through 0-7. The Zip Drive lets you pick 5 or 6. (By the way, SCSI ID numbers have nothing to do with which Slot the SCSI interface card is in.) ————————— From: David Empson SCSI ID 7 is usually special because the Apple SCSI and Hi-Speed SCSI cards count as a device set to ID 7 by default (and every Macintosh has a hard- wired SCSI ID of 7). The only thing that is special about ID 0 is that it is the standard ID used
