- installer/geninstaller: when -b grub2 flag is given, installs grub2 using
grub-install, copies installer/resources/grub/grub.cfg onto target
- installer/resources/grub/grub.cfg: grub configuration that in addition to
having a menuentry for the installer, scans all partitions on the system
other than the one it is running from for linux installations and creates
menuentries for the other installations as well, to deal with potential
situations where the user reboots the system after installing but does not
remove the installation disk