Zero
Mentos! The Freshmaker!
Here's some info from reading and experience on DiskWarrior (a ScanDisk/Defrag hybrid program for Mac OS), and Norton Disk Doctor 6.0.
DO NOT RUN THESE TWO UNDER X or Classic; when you reboot, you will get a kernel panic message, and you'll have to reboot under 9.y (where y >= 1), access the Startup Disk Control Panel, and re-config the control panel to have X be the primary startup disk.
But even after that, I've noticed that X wasn't the same, and had to re-install X.
If you decide to run these two utility applications, I strongly recommend that you make all your partitions HFS (Mac OS Extended).
When running these applications, make sure you either boot into 9.y, or use a 9.x boot CD, and run the applications then. But making sure you run this in a non-X environment is key.
Don't worry though, if the partitions are all HFS, NDD and DiskWarrior will do the jobs just fine.
Just a little something for your information.
DO NOT RUN THESE TWO UNDER X or Classic; when you reboot, you will get a kernel panic message, and you'll have to reboot under 9.y (where y >= 1), access the Startup Disk Control Panel, and re-config the control panel to have X be the primary startup disk.
But even after that, I've noticed that X wasn't the same, and had to re-install X.
If you decide to run these two utility applications, I strongly recommend that you make all your partitions HFS (Mac OS Extended).
When running these applications, make sure you either boot into 9.y, or use a 9.x boot CD, and run the applications then. But making sure you run this in a non-X environment is key.
Don't worry though, if the partitions are all HFS, NDD and DiskWarrior will do the jobs just fine.
Just a little something for your information.