Norton Disk Doctor For Mac

Norton Disk Doctor Freeware Dead Disk Doctor v.1.26 Dead Disk Doctor? Allows copying files from scratched or damaged CD, DVD disks, unreadable Floppy and Hard Drives or other media. It replaces lost data with random bytes reading files by expandable blocks. Norton disk doctor free download - Norton Utilities, Disk Doctor, Dead Disk Doctor Plus, and many more programs.

Norton Disk Doctor Mac Free Download

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Hi,
I frequently boot on my OS 9 partition to do maintenance on my OS X partition.
I use the most recent version of Norton Utilities for OS 9.
Almost everytime I run Disk Doctor I get this Major Catalog Errors :
A major error was found in a file record in the Catalog B-tree.
Node 12797, record 7
'lisa.4274140' has an incorrect data logical length.
(10,7,36)
The problem was fixed.
A major error was found in a file record in the Catalog B-tree.
Node 12797, record 8
'nic.4274140' has an incorrect data logical length.
(10,7,36)
The problem was fixed.
Repairing this problem makes a big difference in the system's speed; I usually know the problem is back when I get the spinning beach ball and the processor power is 100% taken by a user process (I don't know which one because I never was able to open the process viewer since the computer is 100% taken...).
While this error is easily repaired by Norton, I would much preffer to prevent it so I don't have to repair my disk so often !
nic and lisa are the 2 most used users. There is third user used to give smb, ftp, etc... access to my friends without having to give them my password. I dont think I've ever had this problem with this third user.
Anyone knows or has an idea of what is causing this error ?
How can I prevent it ?
Thanks to all