First, my apologies if this has been posted before - I could not find anything on MR (and I've tried a lot of what I've seen on related threads). I bought an entry level 2011 mac mini a few weeks and ago and have since: 1) Upgraded to 8 gig of Crucial RAM - everything worked fine 2) Bought and external USB Samsung cd-rom drive for those rare occasions I need it - seems to work fine 3) Most recently I replaced the HD with a Crucial M4 256 SSD 4) Reset PRAM - worked fine This is my first SSD and I really love it most of the time. The problem is that occasionally it freezes up within various apps and I just get that rainbow wheel for about 30 seconds. During this I can't switch focus to other applications or anything - just have to wait it out. I've read other posts on the Crucial site with people having the same issue where they simply said (I upgraded the firmware which worked fine, then the problem went away). So I see I'm running firmware ver 1 for the SSD and there is a ver 2 out there. I downloaded the ISO and burned it to disk but I cannot get the mini to boot from it. I've tried resetting the PRAM but it only works when the CD-rom drive is disconnected. I've tried holding option at boot, tried holding 'c' at boot,etc and nothing makes it go into a cd-rom boot. Am I missing something? I've tried burning a few disks and they all appear successful but none have booted. This is my first non iMac so I'm new to having to use externals. Unfortunally because this is Lion, I have no bootable disks to "test" with. Any help would be greatly appreciated!!! I love the performance of the drive but this is driving me crazy.