Please let me report my experiences when installing the F9 Beta preview:
0. The disk naming scheme has been changed: in my F8 box, I have a SATA disk called /dev/sda and an IDE disk called /dev/sdb; in F9, the names have been exchanged. 1. I copied my F8 (on my SATA disk) from /dev/sdb1 into partition /dev/sdb9, then upgraded F8 on /dev/sdb9. But after the upgrade was performed, I saw that F8 on /dev/sdb1 had been upgraded and not that F8 on /dev/sdb9, and all partitions were re-labelled with some UUIDs. 2. I copied the install iso to some partition and booted the installer with "askmethod". When prompted, I choosed "install from local harddrive" instead of "local DVD", but the installation still was done DVD based. 3. After booting the fresh installed F9, I waited for "firstboot", but the box hung, and firstboot could not be seen (the boot was done into initmode 5). As workaround i booted again in initmode 3, then the firstboot was presented.
Regards