For general users to mount floppy disks and CD-ROM,you have to modify /etc/fstab file.
/dev/fd0 /mnt/floppy ext2 user,noauto,rw 0 0 /dev/cdrom /mnt/cdrom iso9660 user,noauto,ro 0 0Writing the lines,general users to mount and read media by themselves.Other media operations such as editing are not possible.
If /ect/fstab is properly written,you can omit the device and file type when inputting the commands.As follows.
$ mount /mnt/floppy $ mount /mnt/cdrom
For more information,see man.