PassMark DiskCheckup is a tiny program that allows the user to monitor the SMART attributes of a particular hard disk drive. SMART ( Self-Monitoring Analysis & Reporting Technology ) is an interface between a computer's BIOS (basic input/output system) and the computer hard disk. It is a feature of the Enhanced Integrated Drive Electronics (EIDE) technology that controls access to the hard drive. If S.M.A.R.T is enabled when a computer is set up, the BIOS can receive analytical information from the hard drive and determine whether to send the user a warning message about possible future failure of the hard drive. SMART monitors elements of possible long term drive failure, such as 'Spin Up Time', the number of start/stops, the number of hours powered on and the temperature. DiskCheckup also displays some additional drive information, such as the drive serial number, model number, the number of cylinders, tracks, the sectors per track, etc.