A little tip before I forget it that might help others diagnose this problem better.
The messages seen are generated by Apt (specifically, apt-pkg/acquire- worker.cc::pkgAcquire::Worker::MediaChange() and cmdline/acqprogress/cc::AcqTextStatus::MediaChange() ). Apt can provide more verbose information to syslog (and tty4, accessed with Alt+F4) about CDROM activities with the option: Debug::Acquire:cdrom "true"; This can be set whilst the installer is running. Here's how. 1. Wait until "Install the base system" has begun. 2. Switch to tty2 by pressing Alt+F2 3. Press enter to start a busybox shell 4. Repeatedly check for the creation of the directory "/target/etc/apt/apt.conf.d/" using: ls /target/etc/apt/apt.conf.d/ 5. Once the directory has appeared create a debug settings file in it using: echo 'Debug::Acquire::cdrom "true";' > /target/etc/apt/apt.conf.d/01debug 6. After apt has been installed and syslog (tty4) shows it is working "in-target", any CDROM activities by apt will show up like this: Apr 22 11:44:34 in-target: CDROMMethod::Fetch Apr 22 11:44:34 in-target: cdrom:[Ubuntu 10.04 _Lucid Lynx_ - Alpha powerpc (20100419)]/dists/lucid/Release.gpg Apr 22 11:44:34 in-target: -- Alternate install fails requesting same disc https://bugs.launchpad.net/bugs/360460 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs