I have a WD 4TB portable hard drive that no longer displays in finder and clicks once every five seconds. I am running an M1 iMac. Is there any hope of fixing this? It wouldn't be as bad if i had kept a list of all the files on it. I have a few external hard drives and my files are spread amongst them. I know companies specialize in this but they are very expensive (was quoted over $1000) Any help would be appreciated.