Previous kernel versions are probably removed if one selects "remove unused packages" in apt. There is also an option in the grub configuration files (and in the Startup-Manager applet) that will limit the number of old kernel versions to be displayed at boot.
To access configuration files from a machine without a booting kernel, boot with a live CD and mount the hard drive.
Heidi, considering your line of work I could be persuaded to think that you might find bug-hunting fun. ;-)
Previous kernel versions are probably removed if one selects "remove unused packages" in apt. There is also an option in the grub configuration files (and in the Startup-Manager applet) that will limit the number of old kernel versions to be displayed at boot.
To access configuration files from a machine without a booting kernel, boot with a live CD and mount the hard drive.
Heidi, considering your line of work I could be persuaded to think that you might find bug-hunting fun. ;-)