I've tried to connect the hard disk drives with adapters. I put a 68 pin to 80 pin adapter, from the cable to the hard disk. My computer detects and works fine with the Controller Card. However, the computer doesn't detect the hard disk drive. Why isn't my computer detecting the SCSI Hard disk drives. Does any body know about SCSI Hard Drives? Thanks a lot.
Is the hard-drive marked as "self terminating"? If not, does it have two SCSI ports? If so, you may need to get a "SCSI terminator", which is a plug that goes into one of the ports.
SCSI devices connect serially to each other, so that you can chain them together if needed. If you do not terminate the chain, even if there is only one device, then the SCSI port on your computer won't be able to access the devices. Some SCSI devices are known as "self terminating" as they are able to terminate the chain themselves without the need for an external terminator plug.
Also, check that the SCSI ID of the hard-drive is unique for that chain. As SCSI is a serial connection it needs each device to have a unique ID so that any signals along the SCSI path arrive at the correct device. No two devices on a SCSI chain can have the same ID. Your computer's own SCSI port has a SCSI ID which is usually '7' (SCSI ID = 7) but you will have to check that just in case. If there is only the hard-drive connected to your computer, you can just try changing the ID on the hard-drive, reconecting it and trying again.
Next, you may need to poll the SCSI devices. This is where your computer sends a "Are you there?" signal to all devices on the SCSI port and waits to see which of them reply. Without knowing what your computer is and what software you're using it'd be impossible to give advice on how to do that.
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