The 'Install' button installs the drivers on the Hard-disk
The interleave of the Hard-disk should be set for the type of computer that it is to be connected to. Interleave settings do not change until the Hard-disk is re-formatted.
Select the SCSI address of the Hard-disk to be worked on.
If your Hard-disk doesn't appear, check its power and cables and press the 'Check Again' button.