Repairing BTree system 9.2

Question

when I verified my system 9.2 operating system with Disk Utility I received this error message: "Problem: Invald BTree Header,0,0".
I hit the repair button. and got a "disk was repaired successfully" message; yet I still get "Problem: Invald BTree Header,0,0" message? What does that mean? Am I repaired or not? Why do I stll get the problem message?
wallis33

Answer 1

What some folks say about Disk Warrior is that it is not, strictly speaking, a directory repair utility. It is a File Utility. It collects as much information about all your files from as many places as it possibly can and builds a nice new directory for you to inspect, and compare to the old one. If it seems better than your old one, you can ask it to install the newly-built one in place of the old one.
What happens occasionally, but rarely, is that a block can go bad in the middle of the area normally used for the directory. Rebuilding the directory can help, but sometimes it will require re-initializing the drive and zeroing out all the blocks to get the drive to substitute a spare block for one that cannot hold a test pattern reliably. The drives have built-in spares and the ability to substitute them in for blocks that go bad, but it sometimes takes this step to force it to happen. A drive that develops too many bad blocks cannot be trusted with your precious data, and will need to be replaced.