I'd like to make a dual boot system. The two OS are both redhat and should be on the same disk (different partitions). I tried to install the first (and leave some empty space for the second). The first went ok but when I installed the second on the empty space both do not work (and elilo.conf contained entries only for the second one). please specify exactly what I should do while installing the first and second. Thanks, Dror

1. Make at least 4 partitions: / for each version; swap and extra space to be shared. Don't share the space on /home because different versions will have different hidden files in users' homes. 2. Install both in any order you want. 3. Edit /etc/lilo.conf or /boot/grub.conf (not sure which boot manager RH uses these days). Copy the entry for the version that does boot and change "root" to the other root partition. Also change the label. If you use LILO, run the command "lilo" as root. The only trouble you could have is if the name or location of the second kernel is different. If the above doesn't work, mount the other root on /mnt/other_root (if the directory doesn't exist, you'll have to create it), and check the LILO or GRUB config file for that installation.