Thank you so much to everyone who replied. I am reluctant to put the hard drives in another room because I do not have another computer, NAS, or enclosure to put them into. I had thought about doing suspension from the cd drive bays but I had the misconception that the hard drives would not fit but ...

I have an old pc that I wanted to turn into an HTPC but I find that the hard drive hum is to loud for it to be feasible. I have looked at all of the guides that I could find on how to silence or dampen hard drives but I do not feel like any of them are applicable to my case. My case is from a pre-bu...