If you knew all of the crazy shit that goes on inside of a mechanical hard drive, you'd be amazed that it didn't fly into a million pieces after 10 seconds of operation.
I've been through a couple of hard drive failures and there was no audible warning from the hardware itself. But, I did start to notice weird shit with the daily operation in the OS. Things like files not copying properly or giving errors...or file corruption happening with increased frequency. When you see that, it may be ready to shit the bed.
PLease back up yo shit!
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