Did you set the ID Jumper on the SCSI Hard Drive?
What is the location of the connector you on SCSI Adapter? Look at the User Guide and ensure you are using the Primary connection. On some SCSI Adapters the internal connection is the Secondary and the rear (external) connection the Primary, in this case there should be jumpers to disable the external connection and enable the internal connection. I had to do this when I worked for Unisys building Servers.
You need to set it for a Hard Drive ID that the SCSI Adapter can handle. Most SCSI Adapters I've used had IDs 0 to 8 (older ones) with ID7 reserved for the SCSI Adapter itself. So you could try ID3 on the hard drive.
Also, WinXP may need updated drivers for the SCSI Adapter, depending on how new/old it is.
What is the location of the connector you on SCSI Adapter? Look at the User Guide and ensure you are using the Primary connection. On some SCSI Adapters the internal connection is the Secondary and the rear (external) connection the Primary, in this case there should be jumpers to disable the external connection and enable the internal connection. I had to do this when I worked for Unisys building Servers.
You need to set it for a Hard Drive ID that the SCSI Adapter can handle. Most SCSI Adapters I've used had IDs 0 to 8 (older ones) with ID7 reserved for the SCSI Adapter itself. So you could try ID3 on the hard drive.
Also, WinXP may need updated drivers for the SCSI Adapter, depending on how new/old it is.