What is the device type of an external USB DVD player to use when using the Linux mount command?  ISO9660 is the type for the internal CDROM.  What is the corresponding type for a DVD drive?  Are there different types is the DVD is read only or read-write?Within /dev, SR0 appears to be the internal CD drive.  What is the /dev designation of the external USB DVD drive?
USB DVD device type, /dev designation
centos;mount;dvd