Sorry, I can't help you, but perhaps there's a better way to eject a CD. I don't know how Debian currently does mount those drives, but perhaps this isn't outdated:
http://www.crazysquirrel.com/computing/debian/unmounting.jspx -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/1307832502.9677.9.camel@debian
