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Where can I view hard disk usage stats on Mac OS X? Specifically it's a SMART enabled SSD (Crucial M4). But hopefully this command and/or app will not be so picky with drive type.

CrystalDiskInfo was recommended but it is not available for Mac or Unix.

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SMART attribute 09 (Power-On Hours) is the one that tells you how many hours a device has been running. Anything that can dump SMART info should be able to get it for you. There are several utilities for OS X that claim to do just that, including the Linux favorite smartctl.

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  • Thanks! I found what I needed earlier, but this answer will likely serve others better.
    – Ryan
    Nov 8, 2012 at 17:55
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Trim Enabler worked for my SSD, but it won't work for HDD.

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