Problems With Starting Up After Power Failure

Hi Everyone,
I'm having the strangest problem booting up (or rather, not being able to boot up) after a power outage in my neighborhood last night. What's more, it's the second night in a row that it's happened and has blocked my ability to boot into my two main drives. I installed OSX on a separate internal drive so that I can access them and they seem to be all right and have all the information on them which is good.
Here's what happened: Two nights ago my computer was on and we had a power outage which turned my computer off, of course. I don't have it set to restart after something like this so I tried to restart it in the morning. The blue progress bar makes it about a quarter of the way across and stops. I have the same OS on another drive so I started up with the Option key and chose that and everything was fine. However, the next night the exact same thing happened and I couldn't boot into that drive the following morning either so I had to install a fresh version of OSX on another drive just to get into my computer. I've used Drive Utility, Drive Warrior, Drive Genius and TechTool Deluxe to check the drives and they all say there's nothing wrong. I've tried to reset the PRAM but still can't boot up into those drives which were on when we had the outage. I have unplugged everything and nothing else in the house seems to be effected. Any suggestions? I've had many power outages over the years with my Mac on but never have I ever experienced something like this, and on both drives too! As always, any help will be greatly appreciated and needless to say, I'm turning my computer off tonight before I go to bed!

Sounds like a lesson in there: don't wait to put OS X on an external drive that is usually off line.
Rush to a store or on-line and get a UPS of the 1500VA sort (APC RS would be nice, or SMART UPS 1000VA).
The directory of the drives could be corrupt.
I have all my equipment, modem, routers, the works, but we had a bad storm and one port on the router/modem is out (the one I used, the modem seems to be okay) and I am worried that the UPS's line filter for DSL in is also 'compromised.'
Storms and power outages can wRECK or cuase havoc.
It sounds like you need to map out bad sectors maybe (zero all in Disk Utility) perhaps. The directory, volume blocks, or even journal file, got scrambled. However, because no test can find it means - to me - it could be the "non user partitions" rather than OS X partition etc. Hence, zero the drive or just reformat it in full.
Why have you not ever with these outages, just continued to live w/o one? I wouldn't just shutdown, I would unplug if a storm approaches.
PS: SMC Reset button is under drive bay #4. Give it a 5-10 seconds depress.

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The directory of the drives could be corrupt.
I have all my equipment, modem, routers, the works, but we had a bad storm and one port on the router/modem is out (the one I used, the modem seems to be okay) and I am worried that the UPS's line filter for DSL in is also 'compromised.'
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Why have you not ever with these outages, just continued to live w/o one? I wouldn't just shutdown, I would unplug if a storm approaches.
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