Existing users, 
I have just run Tech Tool Pro 4.6.1 on my 10.5.2 internal drive (from an external boot drive) and it reported 'mismatched bitmap' errors in the directory (which it couldn't fix); but Disk Utility and DiskWarrior 4.1 both reported that the disk was fine.
To be sure, I used DiskWarrior to rebuild and replace the directory and immediately ran Tech Tool again -- for it to report the same bitmap mismatch error. I ran the other utilities again and they still said the disk was fine.
What gives? Is Tech Tool a waste of money?
TechTool Pro
hardware/software diagnostic tool
Version: 4.6.2
Unreliable
Feedback Type: Review
Contributed by: Simon Chapman Sunday, March 23 2008 @ 08:15 AM PDT
Product Platform: MacOSX
Used Product For: 1-6 months
Recommend Product: NO
Overall Rating:
Quality / Stability:
Comments
Unreliable - alberto2602
I run only up to 4.5.3 then I dismissed TT. I had the same problem, i.e. "mismatched bitmap": I was thinking that it was a problem of TT, because I did not find any evidence of this error. And I had not to format HD.Now I have created a partition on my HD (less space than eDisk), where I have "duplicated" the OS: I use to repare the principal one (with some very simple utilities).
I know that TT "destroyed" my mac: many thanks!!!!!
Monday, August 04 2008 @ 10:27 AM PDT
Unreliable - sjohgart
What gives is most likely that each directory verify/repair utility works a bit differently, and thus finds a few different errors (and many errors in common, of course). It's not uncommon for one of the 4 major directory utilities to identify a problem the other three don't (the 4 being Disk Utility, TechTool, DiskWarrior, and Drive Genius). So your problem probably actually exists, but only TechTool is seeing it. You might well want to back up, reformat, and restore your hard drive before something bad bad bad goes wrong with it.Reply to This
Saturday, March 29 2008 @ 10:39 PM PDT