Upgrading 7.2 to 8.0-RC2 i386 the only files requested to merged by hand were the passwd and group files. When rebooted the file system is gone. Mounting the file system from the command line fails. I downloaded the boot only iso for ftp install, file system write fails unable find /dev/ad10s1a missing in node or something near that. I reloaded 7.2 base to retry freebsd-update 8.0-RC2, same results.