you could also run %post with nochroot %post --nochroot then your source is at /mnt/source and your installed system is at /mnt/sysimage cp /mnt/source/foo.bar /mnt/sysimage/home/test of course this is only useful if your doing a network install and the files you want are in or linked to your source install tree on your server also any commands you want to run on your installed system will need to be chroot i.e. chroot /mnt/sysimage useradd foo
