You may have noticed that S.M.A.R.T. Monitoring is only activated for your Mac internal hard drive by default. But there is a way for you to monitor the status of your external drives as well. It involves downloading a free third-party app called SAT SMART Driver. Since this is a third-party app, CleverFiles takes no responsibility for its performance. But it’s a nice way to monitor all of your drives if you wish to give it a try.
Please note that some external drive enclosures don’t support the “SCSI/ATA Translation” technology, so installing SAT SMART Driver kernel extension will not help in this case.
1. Download SAT SMART Driver.
2. Once you have the ZIP file downloaded to your computer, double-click on it to unzip. Open the resulting folder.
3. Double-click on the DMG (.dmg) file.
4. Double-click on the package (.pkg) file with the box icon and follow the installation steps.
5. Power-cycle your external drive by disconnecting it from your Mac (and unplugging it, if it has a power adapter) for 10 minutes. Then plug back in.
6. Launch Disk Drill. The S.M.A.R.T. status should now be listed for your external drive.
Here’s how to uninstall the additional module
1. Type following commands (in Terminal app):
sudo rm -r /System/Library/Extensions/SATSMARTDriver.kext
sudo rm -r /System/Library/Extensions/SATSMARTLib.plugin
2. Reboot your Mac.