This step is generally ignored for Recommended mode.
LILO and GRUB are GNU/Linux bootloaders. Normally, this stage is totally automated. DrakX will analyze the disk boot sector and act according to what it finds there:
If it cannot make a determination, DrakX will ask you where to place the bootloader. Generally, the First sector of drive (MBR) is the safest place. Choosing Skip won't install any bootloader. Use it only if you know what you are doing.