While I've seen a main HDD run okay for a while with 4 KB in bad sectors, this is your back up drive and last line of defence so it is no longer reliable to back up to.
A simple way of copying & pasting the output of a command window is to right click in the text area, click on Select all then press enter.
You can then right click in the reply box or to any text doc such as Notepad and select Paste.