Originally Posted By: joemikeb
As long as no write operation is performed running the analysis should be safe. In fact Micromat's Checkmate relies on exactly that. But Apple has a well established habit of adding new features and functions to the file system. Therefore DiskWarrior, TechTool Pro, and Drive Genius are all OCD about running on any OS version they have not been tested on and certified safe. For the same reason even though running the analysis should be safe those same changes could easily cause those utilities to report either false negatives or false positives.

Your caveats have been posted before, but they're always worth repeating and are always appreciated when they are.

They're irrelevant in this instance, though, because my only reason for running my outdated version of DW would be to see if Carbon Copy Cloner can see the Preview volume to clone it; it doesn't even matter if DW returns inaccurate info so long as it gets to that volume with the magnifying glass icon.


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