Thank you for information. I will do chgrp cdrom /dev/hdc and see what will happen after several apt-get upgrade. -- Oohara Yuuma <oohara@libra.interq.or.jp> Graduate-school of Science, Kyoto University PGP key (key ID F464A695) http://www.interq.or.jp/libra/oohara/pub-key.txt Key fingerprint = 6142 8D07 9C5B 159B C170 1F4A 40D6 F42E F464 A695 I always put away what I take. --- Ryuji Akai, "Star away"