[root@Linux root]# mount -t iso9660 /dev/cdrom /mnt/cdrom
mount: block device /dev/cdrom is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
or too many mounted file systems
[root@BABYST root]# mount -t iso9660 /dev/cdrom /mnt/cdrom
mount: block device /dev/cdrom is write-protected, mounting read-only
mount: /dev/cdrom already mounted or /mnt/cdrom busy
mount: according to mtab, /dev/cdrom is already mounted on /mnt/cdrom
[root@BABYST root]#