Posted 24 December 2009 - 03:02 PM
Have you tried the "Repair your computer" option when booting from the disk?
The 110GB partition is still there, but something might be corrupted. An automatic startup repair might fix it. If not, try System Restore. And if all else fails, you might have to just reinstall (not sure why the install disk can't see the bigger partition, though).
After you get it back up and running, I would recommend doing a Windows Backup with a full system image. It makes restoring to an earlier time so much easier. The system image has saved my butt more than once!! Go get yourself an external hard drive (as big as you can afford) during the after Christmas sales. They should be cheaper then.
Good luck and Merry Christmas!!