Ubuntu :: FSTAB Timeout - Recover Lost Partitions ?

I woke up this morning to a non-booting 9.10 computer. After my grub screen disappears, I get the familiar Ubuntu b/w logo in the center of my screen. My hard drive cranks for an abnormally long time and then I get the following error:

I booted into a live CD and opened up GPARTED and my sdb4 (my /home location) partition shows up. I do a check on it and it seems ok.

I opened the Palimpsest Disk Utility to see what it said and it shows sdb4 as Unknown or Unused. I can not mount this drive using GUI methods.

I did some research on the forums looking to recover lost partitions. here is the output from fsck

Code:

and the abbreviated output from fdisk -l

Code:

Disk identifier:

This seems ok too.

My next step was to try testdisk. When I ran it, I was able to navigate this partition and apparently see all my files. I then tried to mount the partition manually.

Code:

That also worked.

It seems to me that I practically have this thing where I need it without too many worries.

My question is: What is the next step to get this back booting again? I'm afraid of rewriting the partitions in testdisk until I get some feedback on whether this will really solve my problem. Maybe the partition isn't the problem? Is it something else and I've been going down the wrong path?