I tried to defragment my hd using iDefrag. Prior to defragging, I ran DiskWarrior. iDefrag [which runs fine on my other 3 Macs] went into an endless loop and, when running repeatedly, it generated an error message...cannot move blocks from A to B.
Q at that time: directory issue of hardware issue.
So I zeroed the hd, and hence, retired any bad blocks [if there were any]...after re-loading the software from scratch, when running iDefrag again, I had the same error message and problems. After several tries, I am down to 4 fragmented files with no more than 3 fragments each. All files belong to Spotlight.
The friendly people at Apple Care were as much at a loss as I was. Fact is that I have never had any hd issues in real life.
Does anybody have similar problems and how did you solve them?