copying device nodes

I'm trying to transfer a working Linux installation to a new larger disk, so I've attached the new disk on a USB port, partitioned it and created filesystems. While copying all the files over I hit a snag on the /dev directory. "cp -a" does most of the job, but fails on e.g. /dev/video0 with "Operation not supported". >ls -l /dev/video0 # on disk I copy from crw-rw----+ 1 root video 81, 0 2011-09-25 17:15 video0 >ls -l dev/video0 # on disk copied to crw-rw---- 1 root video 81, 0 2011-09-25 17:15 video0 So it seems everything was copied except for the "+" at the end of the access-rights field. What does that plus-sign mean and how can I create it on the destination disk?