If your Linux machine is acting up, faulty blocks or sectors on your hard drive might be to blame. If so, here's what you need to do right away - before you risk losing your data.
Source: ADnet
Source Link: https://www.zdnet.com/article/how-to-check-for-bad-blocks-on-a-linux-pc-hard-drive-and-why-you-shouldnt-wait-to-do-it/