if you get info on the pervius system folder what do you see as the creation date of that folder?
If you open disk utility, (applications utilites), and verify the built in drive, dose it report any errors?
Is there any chance your father may have acidently dragged some of the folders / files you found into the trash can?
Thanks for the suggestions. I'll have time to follow up on them tomorrow. Based on what I know now,
- the creation date for the previous system was sometime in 2010 (about two years after he purchased the computer.)
- I'm going to get him to run Disk Utility Verify/Repair tomorrow; he finally found the original installation disks.
- There was too much stuff in the trash, all at once, for the cause to have been one of his notorious "oops" moments.
Thanks again. I'll post more information tomorrow.