SMART stands for Self Monitoring Analysis and Reporting Technology System. What is a SMART error? Let's start at the very beginning. This little alarm bell indicates that your hard drive has experienced a problem affecting its stability and possible ability to operate. Let's jump straight in.Ī SMART hard disk error is enough to raise your blood pressure one thing is for sure, if you've received an error message, it's time to act fast.īackup your data now to prevent complete loss. If you're wondering what that little acronym stands for, how to troubleshoot and fix it, keep reading. It's a warning that no Mac user wants to receive. If you're here, then I'm guessing you found yourself with a SMART hard disk error.