I am trying to create a persistent bootable USB with BT5. I have been following this tutorial here but I have run into an error and I can't figure out what it means or why I am getting it.

I am at the part where I have just moved into the flash drive with the code:
cd  /mnt/sdb1
and the next step is the code:
rsync -r /cdrom/* .
Now when I do that it comes up with this error message:
rsync: link_stat "/cdrom/*" failed: No such file or directory (2)
I have a know good live DVD of BT5 R3 in my DVD drive and I know that it is recognized by the system because I got the info message after I inserted the disc.

can anyone help me out here with this please?