This seems like more of a general computer question, not a Firefox-related question. Your question kind of falls outside of the scope of this forum. You will likely get an answer to your question must more efficiently and quickly by posting it on a forum dedicated to your specific operating system. Something like [https://askubuntu.com/ Ask Ubuntu], if you are using the Ubuntu distro. Best of luck finding the answer to your question. P.S. Sometimes the SMART setting can be enabled from your BIOS settings.