After a recent MS Explorer crash, I ran Symantec (Norton) Disk Doctor. Without success, as it stopped with error 23019. Apple Disk Utility said my disk "appeared to be fine". Symantec Online Technical Support informs me that 23019 means that the Catalog B-tree is damaged, and the solution is to back up and reformat. Are there any ways to fix this without backing up and reformatting? Would Micromat Drive10 fix it? SubRosa Soft DiskGuardian? (DiskWarrior X is not currently available). Any suggestions appreciated. Thanks. Dual 800 G4, 10.2.6. ------------------------------------------------------------------------------ Privileged/Confidential Information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply email. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. ==============================================================================