Removing simple-scan (3.20.0-0ubuntu1) ...
Processing triggers for libglib2.0-0:amd64 (2.48.1-1~ubuntu16.04.1) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160701-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...
Setting up initramfs-tools (0.122ubuntu8.1) ...
update-initramfs: deferring update (trigger activated)
cp: cannot create regular file '/cdrom/casper/initrd.gz.new': No such file or directory
dpkg: error processing package initramfs-tools (--configure):
 subprocess installed post-installation script returned error exit status 1