Your request was moved to the Driver Request section from "Removable Drives" tech support section because it's a DRIVER REQUEST, not a tech support issue. Please, in the future, use our driver request section so you can answer important hardware questions. Mainly whether it's an External or Internal drive and a valid interface type.
The 9100 series includes several models and interface types but HP hasn't made a scsi drive in years and the 9100 series does not include any scsi models.
Please provide the missing information and we'll attempt to help you.
1: Which 91xxx model do you have?
2: Is it internal or external?
3: If external, is it usb interface or older scsi or parallel interface.
4: If external, did it come from HP like this or was it assembled by someone other than HP?
5: If external usb, provide information about the enclosure, eg: brand, model, chipset used in circuit, etc.