try where it works in an external enclosure.

if the disk is really dead, you need an expert.

One such company usually asks like $200 and up to just have a look, if they can retrieve some data, you may have to pay them like $1,0000 for the data.

Again and again, we say here: unix101, backup! Also, remember, if it's within the same computer, it's not a backup, even if it's physically on another disk.