Does that mean that we will end up with two /boot, one for Debian and one for Gentoo, and two / one for Debian and one for Gentoo? Something like /dev/hda1 swap (common) /dev/hda2 /home (common) /dev/hda3 /boot (for Debian) /dev/hda4 / (for Debian) /dev/hda5 /boot (for Gentoo) /dev/hda6 / (for Gentoo) Is that right? Where is the information for the kernel and for lilo (or Grub) about which partitions to use, in the System.map file?