The last step in the Linux installation process is setting the boot device. A utility called LILO (Linux Loader) usually boots Linux. LILO can boot your system in several different ways, depending on whether you want to use your system with another operating system. Most of the time, you will want LILO to boot your system into Linux with the option to load DOS (if you have it on your system).

The LILO screens explain most of the choices quite well, but LILO has a few quirks to it. Chapter 4 is devoted to explaining what LILO does and how to make it behave properly. For now, if you are impatient, follow the defaults, but don’t let LILO overwrite your hard disk’s Master Boot Record. Doing so can cause a bit of a hassle when you want to boot DOS. You can, though, let LILO write a boot sector to your Linux partition, and then use fdisk to make either DOS or Linux active. If you’re not too sure what to do with LILO, ignore it for now. You have a boot floppy disk that lets you start your machine. When you better understand LILO, you can set it up the way you want.

As a last step in the installation process, reboot your machine and let Linux boot from the boot floppy disk or from LILO, if you installed it. If everything boots properly, you can use Linux as you normally would. If you experienced problems booting, watch error messages and check the installation process to see which part went screwy. As long as you have your boot disk, you should be able to get into Linux without a problem.