Just a general question that I hope that someone "SMARTer" than me can answer.
My four Thunderbolt drives always show up with SMART status verified by neither my FireWire 800 drives nor my USB 2.0 status show SMART status at all.
It's nothing that I'm really worried about, just wondering why?
Clinton
MacBook Pro (15-inch Late 2011), OS X Mavericks (10.9.3), 16GB RAM 960GB SSD Apple TB Display
Apple's USB storage driver doesn't support the particular kind of SCSI/ATA encapsulation needed to get SMART data from a USB disk.
There's a third party app/driver called DriveDx that claims to do this, but it does mean loading a third party kext into your kernel, which is never something that makes me happy!
No idea why Firewire doesn't support it, I've never owned a FW drive, but I imagine it's a similar problem, a lack of ability to encapsulate the required commands. Or that Firewire->ATA controllers don't support it.
Why do my Thunderbolt drives show up with SMART status verified but my FW and USB not?
