Is this it, the prompt? I thought there would be more info like if everything is good or not.
Last login: Fri Apr 24 11:22:29 on ttys000 MacBook-Pro:~ (my name)$ sudo dd if=/dev/rdisk1 of=/dev/null conv=noerror bs=5120 Password: 195345817+1 records in 195345817+1 records out 1000170586112 bytes transferred in 34736.077742 secs (28793423 bytes/sec) MacBook-Pro:~ (my name)$
That's it, Rita.
The number of records in and out being equal means that the are no bad blocks on the drive.
OK, that having been established, nobody having contributed even a wild conjecture about why Mavericks boots to a prohibited sign, and Macintosh HD having been repaired, you're ready to move on to the the upgrade if that's where you're going.
The first thing I think you ought to do, and that's under any circumstances, is completely erase your external, reformat it with a well thought out partition scheme, and then clone Macintosh HD onto it.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire