Here is some information on my present setup making possible to use either Mandrake (my current distribution) and Fedora Core 3 (FC3 my second distribution presently being on test) ; this I would imagine might be of use for people that want to install a Mandrake distribution for test in parallel to their FC3 distribution. Both distributions are installed on separate partitions : a) for Mandrake I have LILO on MBR (hda1) ; here is my LILO configuration : Beginning of file------------------- # File generated by DrakX/drakboot # WARNING: do not forget to run lilo after modifying this file default="2.6.8.1-udev" boot="/dev/hda" map=/boot/map vga="791" prompt nowarn timeout="100" message=/boot/message menu-scheme=wb:bw:wb:bw image="/boot/vmlinuz" label="linux" root="/dev/hda1" initrd="/boot/initrd.img" append="devfs=mount acpi=ht" read-only image=/boot/vmlinuz-2.6.3-4mdk label="2.6.3-devfs" root=/dev/hda1 append="devfs=mount acpi=ht" read-only image=/boot/vmlinuz-2.4.25-2mdk label="2.4.25-devfs" root=/dev/hda1 initrd=/boot/initrd-2.4.25-2mdk.img append="devfs=mount acpi=ht" read-only image=/boot/vmlinuz-2.6.8.1-12mdk label="2.6.8.1-udev" root=/dev/hda1 initrd=/boot/initrd-2.6.8.1-12mdk.img append="acpi=ht" read-only other=/dev/hdb1 label=grub End of file------------------------- - with this configuration when booting from MBR through LILO I can access FC3 world with GRUB using the last entry with label=grub. b) for FC3 its own bootloader installed on hdb1 therefore not on MBR therefore still allowing use of Mandrake distribution ; here is my GRUB configuration file : Beginning of file------------------- default=0 timeout=10 i18n (hd1,0)/boot/grub/messages splashimage=(hd1,0)/boot/grub/splash.xpm.gz color black/cyan yellow/cyan title Fedora Core (2.6.9-1.667) root (hd1,0) kernel /boot/vmlinuz-2.6.9-1.667 ro root=LABEL=/ vga=791 initrd /boot/initrd-2.6.9-1.667.img title Fedora Core (2.6.10-1.741) root (hd1,0) kernel /boot/vmlinuz-2.6.10-1.741_FC3 ro root=LABEL=/ vga=791 initrd /boot/initrd-2.6.10-1.741_FC3.img title LILO rootnoverify (hd0) chainloader +1 End of file------------------------- - with this configuration when booting from MBR through LILO I can access GRUB ; when in GRUB Ican go back to LILO (and then to GRUB.... for fun all days long !). - with proper modification of "fstab" file in each world I can access partitions and therefore files of the other world ; for example Paul told me how to configure GRUB through a message collected with KMail-Mandrake as I am handling my mail for practical reasons with Mandrake : in root mode I directly configured my "grub.conf" of GRUB-FC3 before rebooting and check for effect ; this would also help in fixing files when you are no more able to boot from a distribution by doing it from the other distribution (it happened to me with Mandrake that my root password was no more accepted ; I fixed it with my Mandrake CD but now I would use FC3 !). - rebooting from Mandrake is more powerfull with some logging managers as you can directly select you LILO entry, for example "grub" entry, to reboot through selection. - KDE in Mandrake includes a LILO module in KDE Desktop Configuration Center that allows direct modification of LILO setup in root mode ; this does not exist for GRUB with FC3 ; it icludes more : an "info" module where you can visualize all your system features including SCSI, USB, IRQ's etc... ; this does nor exist with KDE as proposed by FC3. - when I boot with kernel 2.6.8 entry in LILO I have apic mode as I have to include "noapic" in "append" section to be without ; with kernel 2.6.9 and 2.6.10 apparently I have "noapic" option on as far as I could check ; how to force use of apic ? I want to thank Paul, Thomas and Jeff in particular from that list that somehow helped me to put all this together. That is all folks ! -- Daniel Moyne (Nulix)---------------------------------------------------------- Distribution : Mandrake 10.2 test \\|// Fedora Core 3 on test kernel 2.6.8 / --- \ kernel 2.6.9 and 2.6.10 KDE 3.3 (' o-o ') KDE 3.3 ------------------------------------oOO-(_)-OOo-------------------------------