Stellar Drive Monitor brings in good news for Mac users having OS X 10.4.11 to 10.8, now each of them can closely monitor the internal hard drive activities & corresponding partitions in the most simple fashion. The UI of the tool is crisp which enables soft clicks to analyse temperature of the hard drive (partitions), surface scan that reports bad blocks present on the hard drive (partitions), brief & full information of the hard drive (partitions). S.M.A.R.T of a hard drive can be viewed as well as saved for future references. The end of the SMART test would either result in pass or fail depending upon the condition odf the hard drive & partitions. You can jump to Preferences of the Stellar Drive Monitor utility & manipulate the settings in the manner you require like start-up at login, verifying I/O errors & un-allowing to check disk on battery power. Make full advantage of the 30 day trial period that allows to view SMART & scan status, however, for advance features such as Drive Performance & backup, you must register.