It's still under Applecare so I would suppose that I could get the HDD replace, correct? Not that there would be any point in doing so: I've been meaning to replace the internal HDD with an SSD eventually anyway (might be a good time to do it). I don't suppose there is any way I could take the iMac in and say, "Here take out the old hard drive that failed, and put in a new SSD that I bought."😀
Just kidding, I'm sure that breaks all kinds of Apple kosher.