dual boot 2 versions fedora using lvm

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http://forums.fedoraforum.org – I have a box with fedora7 and would like to install f11 as a dual boot. At some time in the future I would change f7 for fxx whatever the then current version is. F7 is currently installed using LVM, see df output: Quote: [root@elina ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 71G 7.2G 60G 11% / /dev/sda1 99M 27M 67M 29% /boot tmpfs 1.5G 0 1.5G 0% /dev/shm /home and /var/www/html are mounted as NFS from a file server and I will, once f11 is installed and running mount the same directories in the same way. From what I can see I should be able to use parted to reduce the size of LogVol00, then lvm to reduce the size of VolGroup00. That would leave me with an unallocated area in which to install F11. What I am not clear about is: do I need to create /dev/sdaX to contain the new /boot ? and what will happen with grub? I will need to be able to go back to f7 until I have got f11 running with all the needed applications. Or is there a better way? I cannot be without f7 until f11 is complete. Thanks in advance for thoughts and advice Richard (HowTos)