The ISO recorder you linked me worked making another copy. I was able to run CHKDSK /R from this other tool, and it fixed a BUNCH of problems, including deleting and rebuilding the attribute records that it said were corrupt. Plus it fixed other file/cluster problems. Then I ran the SONY disk diagnostic hardware checking tool, which did extensive checks, and found no problems. These file problems mystify me, cause this laptop is slightly over one year old and has only been used 5 times, the most for two weeks at a stretch. Any ideas why all of these file problems would have cropped up?
The VISTA search still returns a bunch of "blank" spaces where it should find files. It did not always do this.
Do you know of another good free 3rd-party disk diagnostic tool I could run on my non-SONY machine? I have not looked for one yet.
You have answered several of my questions over the past many months, and thanks again for your continued help!