If you have trouble figuring out what kind of hard disk you have, either
refer to the documentation that came with the drive, call the vendor, or
re-read the chapter on hardware.

The key thing to keep in mind is to make sure how the disk is configured. Every drive should come
with some kind of documentation, either a detailed, multi-page manual, as is the case with many
SCSI drives, or a single sheet, as is common with IDE
drives. This documentation usually contains information about the default settings of the drive.
Don’t trust those default settings. Check them out yourself to ensure they are correct before you
stick the drive in the machine. It is easier to check beforehand than it is after you’ve tried to install it and failed.