new installation of the base operating system

[Abri Nation]

Hi @all,

i have installed Fedore Core 6 with Xen-Support.
now i have to install  fedora core 7 or centos5 as the
new base operting system.

will there be any problems after the new installation to start my
configuerd virtual machines? i have the "disks" of the virtual machines
on a seperate LVM partition. i would change /dev/sda1, /dev/sda2 and
/dev/sda3 (new installation)
but not the filesystems where the virtual machines are stored (/dev/sda5).
has anyone experience with that or can tell me if i will get in trouble to
start the VMs after the the base
operating system?

my partion table at the moment:

/dev/sda1   *           1          19      152586   83  Linux
/dev/sda2              20        3843    30716280   83  Linux
/dev/sda3            3844        4990     9213277+  82  Linux swap / Solaris

/dev/sda4               Extended
/dev/sda5               Linux LVM

thank you very much for help!
greets,
Abri