How do I remove LILO or GRUB (or the Master Boot Record) from my system?

The contents of the master boot record can be eliminated with the dd utility. The master boot record of a hard drive is the first 512 sector of that hard drive and it stores the binary code for the system boot loader (usually LILO or GRUB). The contents of the sector are not part of any partition and therefore are not removed during a normal format. Its contents can be removed how...