Here is the situation, there is a 5 drive raid 5 setup, drive 1 failed and was removed. Everything was fine. Then drive 5 was pulled and put into drive 1 slot. Server would not boot. When we got there we pulled drive 5 from slot 1 and put it backinto slot 5, however the raid would still not boot. The adaptec utility identifys drive 2,3,4, as part of the raid, and drive 1 & 5 missing. (drive 5 is a good drive).