It's for when you remove your boot loader
You'll need your boot floppy to get back into linux once we figure out if Windoze will boot without lilo on the MBR.
Now you will need to open up a console, type:
Type your root password, then type:
This removes lilo from the MBR. Now when you reboot, to get into linux you'll need to use your boot floppy you just made (I suggest before removing lilo from the MBR, you test that boot floppy