Here is what TechTool Pro 4 returns on my internal drive: S.M.A.R.T. stands for Self-Monitoring Analysis and Reporting Technology. This test checks and reports on the status of the S.M.A.R.T. routines built into your drive. These routines monitor important drive parameters as your drive is operating. An examination and analysis of these parameters can aid in the prediction of drive failure. This will allow you to back up your data before your drive fails and the data becomes inaccessible. S.M.A.R.T. Self-Checks Attribute Normal Worst Threshold Status 1 Read Raw Error Rate 100 100 50 Okay 2 Through Put Performance 100 100 50 Okay 3 Spin Up Time 100 100 1 Okay 4 Start/Stop Count 100 100 0 Okay 5 Reallocated Sectors 100 100 50 Okay 7 Seek Error Rate 100 100 50 Okay 8 Seek Time Performance 100 100 50 Okay 9 Power On Hours 99 99 0 Okay 10 Spin Retry Count 124 100 30 Okay 12 Power Cycle Count 100 100 0 Okay 192 Power Off Retract Count 100 100 0 Okay 193 Load/Unload Cycle Count 94 94 0 Okay 194 Temperature 100 100 0 Okay 196 Reallocation Event Count 100 100 0 Okay 197 Current Pending Sector Count 100 100 0 Okay 198 Off-Line Scan Uncorrectable Sector Count 100 100 0 Okay 199 Ultra DMA CRC Error Count (Rate) 200 200 0 Okay 220 Disk Shift 100 100 0 Okay 222 Loaded Hours 100 100 0 Okay 223 Load Retry Count 100 100 0 Okay 224 Load Friction 100 100 0 Okay 226 Load-in Time 100 100 0 Okay 240 Unknown 100 100 1 Okay S.M.A.R.T. Self-Checks <Passed> Tests Completed Passed jg Chris Olson typed this message on 11/21/04 1:20 PM: > They can. Open a terminal window and type: > diskutil info disk0 > > or alternatively, open the OS X Disk Utility, click on your hard disk > in the left pane, and click the Info button in the top pane. You'll > see the S.M.A.R.T. status in the window.