You have booted from a CD and need to install a package on the unbootable system
Boot into Linux using a Debian rescue floppy/CD or an alternative partition in a multiboot Linux system. Mount the unbootable system on /mysystem and use the chroot install mode of dpkg.
# dpkg --root /mysystem -i packagefile.deb
Now you can try to configure and fix problems.
By the way, if a broken lilo is all that prevents booting, you can boot using a standard Debian rescue disk. At boot prompt, assuming the root partition of your Linux installation is in /dev/hda1 and you want runlevel 3, enter:
boot: rescue root=/dev/hda1 3
Then you are booted into an almost fully functional system with the kernel on floppy disk. (There may be minor glitches due to lack of kernel features or modules.)
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.