I am trying to upgrade from FC16 to F17 using the x86_64 DVD. CPU is AMD FX-6100, M/b Gigabyte GA-970A-DS3.
First time round /usr-move failed due to lack of free space on /usr, which is on a separate partition to /. Now when I re-run the install it fails to recognise the existing FC16 installation. Both the FC16 and FC17 Live CDs can recognise it and boot from HDD, and the FC16 install DVD also recognises it.
Following the failure of /usr-move I had to edit grub.cfg, as it had managed to get as far as moving /sbin/init to /usr. I posted that saga here http://forums.fedoraforum.org/showthread.php?t=280880
but have started a new thread is it appears to be a different issue now. The system boots to FC16 without problem. There is no dual-boot, disk encryption or anything else odd - apart from the fact that there are separate partitions for /, /usr, /var and /usr/local. However this has never caused a problem with previous upgrades, and the FC17 upgrade started off OK first time round.
The only material differences from first time are the necessary changes to grub.cfg to get the system to boot, and the changed space utilisation in / and /usr. I am aware I still need to resize /usr, but if the installer is checking that I would expect an error message of some kind rather than for it to completely ignore the existing installation. Is there anything else the FC17 installer might check for?
NB: The symptoms are similar to #748119 on FC16 https://bugzilla.redhat.com/show_bug.cgi?id=748119
due to /var being on a separate partition to /, though the workaround for that is still in place on the system.