I am installing CentOS in Virtualbox.
I entered CentOS directory without / at the beginning even though you see /Linux/... in the first image.
Then I get an error message as you can see in the second image.
I think the cause of error is the second // in ftp://ftp.riken.jp//Linux/..
I am not able to get rid of one of /.
What could be the reason or how to install from FTP?