＊＊@＊＊-linux:~$ sudo mount /media/cdrom0 -o unhide
[sudo] password for ＊＊:
mount: block device /dev/scd0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/scd0,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so