and plain file images too. If no TOC can be read, a single track is assumed which spans the whole thing. The disklabel will be updated if supported by the device. If not, just the ISO volume label information will be printed.
and print out volume label and creation time -if the drive cannot be open()ed read-write, try read-only and print the information
disklabel (in-core one, of course) from a CD TOC, which is useful to access previous sessions on a multi-session CD
