Hello All, This is my first post.. I was reading MacRumors for a long time and was always able to find correct answer for me. But not at this time. I am running Mac Pro with Apple Mac Pro RAID Card (both early 2009 version) and since last crash of another WD HDD I am concerned about monitoring them (details and reasons below). Short question is how to run EXTENDED self-test for drives attached behind apple hardware raid? All possible tricks with smartctl failed for me Tried any -d options without any luck. Why I need this: I like Apple's way to do just a green indicator saying "Verified" but last time it was same green with few read errors by extended test. (It also stayed "green" even after failed test). Ok probably this can be called "Verified" ... But right now there is a MacBook Air of my wife with same green "Verified" hdd showing this by extended test: 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 3 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 3 !!! Error 3532 occurred at disk power-on lifetime: 1 hours (0 days + 1 hours) !!!!! 7 Seek_Error_Rate 0x000e 252 252 000 Old_age Always - 19 This practically means that HDD can't find 19 blocks PHYSICALLY. Sometimes laptop completely freezes for few seconds when hdd hits such blocks. But Apple's Disk Utility still shows everything is fine P.S. Is there any tool to remap these blocks in order to avoid OS hitting them until SSD replacement will come?