ID 3
ID3. Every other device can be set to any number as long as it's not in use. It is a recommended practice in IT comunity to set the scsi ID number for CD-ROM drive to 3.
The ID number which is traditionally assigned to the SCSI controller is ID 7. ID 7 is given the highest priority during bus arbitration.
Assign each SCSI device a unique ID number
The SCSI logical unit number for boot devices is almost always zero(0).Matt Friend
The host adapter is assigned SCSI ID 7, which has the highest priority over all other devices.
You change the ID of one of them. You change the ID of one of them.
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8 or 16 depending upon the SCSI hardware being used. In a narrow bus, you can use a SCSI ID of 0-7, and in a wide bus, you can use 0-15.
scsi
Any compatible USB or Serial external CD-ROM drive should do good justice. If your ThinkPad supports SCSI interface and has a SCSI connector you can get a SCSI external drive. I would recommend Sony or Creative CD-ROM drive.
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