Mac 10.6 bootcamp partition missing

In a bit of a panic..

I've had Bootcamp running with a secondary windows partition for years. (Set it up when I bought the rig in 09)

This morning I was on FB, reading articles, etc.. when Chrome stopped responding.

Couldn't force quit.. had to hold the power to reboot.

It rebooted into windows.

Shutdown immediately, and rebooted again. Held down the option button. and my OSX partition was missing.

What the ****...

Then I tried to get into windows to see if I could access the mac partition.

However the windows side wanted to run a diagnostic because I shut it down.

Let it do that, black screen.. No response..

I have not seen any problems with the Hard Drive..

Thoughts?

I can still boot it up and see the windows partition in boot camp.