I then found this question (that described exactly my problem), and I tried all of the suggestions mention:1) I did a checksum and it was not a corrupted iso.2) There is no reason why the sdb (SSD) should not work, as I've used it before and checked that it is working properly.3) The other issue re: Install with an Internet Connection -- well, I had an internet connection.None of the suggestions (answers) worked for me.