I have a testing machine that has server 2008 R2 on it. I downloaded ESXI4.0 to disk then booted to disc, selected a disc from the raid array and then I am met with Disk read error first time then I receive boot loader missing. Am I to install ESXI first then the OS? I had Server 2008 installed with a 4 disc raid 4 set. What am I doing incorrectly here? please advise.