no, unfortunately I can't see /dev/sda. the fdisk - l command, it takes a while, but then in the end it only shows me /dev/sdb which is the live usb stick
there seems to be a problem with the hard disk. I just wanted to know if I can fix it somehow or I should throw it away. the problem is that the hard disk is not recognized.
https://pastebin.com/2BzytHdC