CDROM을 사용하여 Ubuntu Natty에 KDE 설치

현재 Ubuntu 11.04 - Natty가 있고 기본 환경은 Unity이지만 동시에 KDE만 설치하고 싶고 완벽한 대역폭이 없습니다. 그래서 나는 친구에게서 쿠분투 11.04 CDROM을 가져와 내 CDROM에 삽입했습니다. 실행 후 apt-cdrom add다음 내용이 출력됩니다.

Using CD-ROM mount point /media/apt/
Identifying.. [ce3c168e46b345c6adc05b209f603d08-2]
Scanning disc for index files..

E: Unable to stat the mount point /media/Kubuntu\04011.04\040amd64/ - stat (2: No such file or directory)
E: Unable to stat the mount point /media/Kubuntu\04011.04\040amd64/ - stat (2: No such file or directory)

CDROM의 감염 여부를 테스트했는데 괜찮습니다. 문제는 무엇입니까?

업데이트: 내 친구가 방금 여기에 내 항목을 인쇄해 달라고 요청했습니다 fstab. 예상대로 내 CDROM 장치는 목록에 없지만 다음과 같습니다.

# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sda5 during installation
UUID=d8caef34-1670-4525-a5b5-df889f62aa1e /               ext4    errors=remount-ro 0       1
# /home was on /dev/sda7 during installation
UUID=7b71d3a8-bbea-477e-8b04-0c9651d0e12e /home           ext4    defaults        0       2
# /windows was on /dev/sda3 during installation
UUID=CC523DE8523DD7C2 /windows        ntfs    defaults,umask=007,gid=46 0       0
# swap was on /dev/sda6 during installation
UUID=3a281560-f3aa-4795-b396-0810e1eb15e2 none            swap    sw              0       0