I was just procrastinating from marking once again and thought I would update the drivers on my ASUS P5B Deluxe system, including the ROM update. I haven't updated it in about 7 months, and since this board was fairly new when I bought it I assumed there would be have been a significant revision to the chipset and possibly the ROM. I headed over to the Asus website (which as a side note is a lousy interface) downloaded some updates and proceeded to install them. Of course I always get a little spidey sense when upgrading the ROM, but went ahead anyway. Right after I clicked on the FLASH action button, I noticed a check box indicating to set the CMOS back to it's default settings. What sent up the warning bells was that the default settings meant changing the HD configuration back to normal and out of the RAID configuration I had them set up for. My technical instinct of course told me that even if the settings in the CMOS changed the MBR and RAID configuration on the drives was untouched and therefore switching the settings back shouldn't be a big deal, but of course you still worry that you might have just trashed your system. Well the system boots up and wham I get a ROM checksum error. Not entirely unexpected, and after I got over the 5 sec thrill of the keyboard not responding and pressing on the damn FCN Lock key to activate the Fcn keys, I pressed F2 (I should have pressed F1) and reset the CMOS. I then had to reboot and go back into the CMOS to adjust the settings back to RAID. Made the change and my system booted. Unfortunately it had an issue with the video not displaying, but I have experienced this in the past and a simple reboot fixed it. For some reason my system also lost it's video drivers, but that could also have been because I updated the chipset drivers as well.
Anyway all's well that end's well, but as usual a case of simply updating a system wasn't as relaxed as I would have liked, but definitely a good procrastination chore to get the technical juices flowing.