Hello, suddenly one of my MyBook exposes SMART warning C5 Current Pending Sector Count - 200 / 200 / 0 / 1 Is this dangerous warning? Is the drive going to die soon? Can I fix it somehow?

Stop using this disk and consider getting a 2nd disk to transfer data to. HDD regen or any other sector re-writer *could* put the disk in an un-usable state till a low-level zero write is done…I wouldn’t trust the disk, and there’s no reason for you to do so either. You can experiment and play with…