Probably better to wrap paper toweling around the drive going bad, stick it in the freezer overnight, and use
and if necessary adjust the options for a maximum of 512 bytes and a minimum of one, and maybe even use the -r option if copying to another disk of exactly the same capacity, and have a fan blowing on the problem disk.
"I am altering the deal. Pray I don't alter it any further."
Darth TiVo, 14 February, 2011