Actually, I just read all info, and only first tool can be run from bootable floppy, and the other one ([SDIAG] SCSI Diagnostic Tool ) has to be run from within Windows.
I propose, you first try Hitachi tool (Drive Fitness Test): Download Drive Fitness Test Windows Diskette Creator v4.15 b01 (12.16.2008) (Direct Link)
It will create bootable floppy.
You can create the floppy on another computer.
Put the floppy into bad computer, and restart it.