I am not sure about this but my cousin who is a Computer Engineer Told me about this.
Whenever your hard drive stops working it is usually the actuator heading touching the disks the distance between them is in microns so my cousin told me once the hard drive stops working and you want to retrieve the DATA he told me to freeze the hard drive for 24hrs and when frozen the head is freezes above the disks and does not touch the disks and you can back up the data till it unfreezes again which is like 20-30 mins.
So since freezing the hard drive is one of the solutions for data recovery I dont think that 8C is gonna be a problem.