I'm planning on selling a used external HDD on eBay. Are there any applications for Mac out there (preferably free) that can show me statistics about the usage history for the drive so that I can let potential buyers know the condition more precisely?
Applications – Best macOS App for Showing External HDD Usage Statistics
applicationsexternal-disksoftware-recommendation
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Best Answer
By usage stats I'm assuming you mean SMART stats...
DriveDx has a trial version that will show SMART stats. But you have to load a kext to see USB attached disks. That's a common issue with all the 3rd party programs.
It works well, and will allow you to do short & extended self-tests even in the trial version. It will save a report you could email to your potential buyer (Actions | Save Drive Health Report).