From fedora17 of the latest to install fedora 18.

[easyboot]

Use the grub2 Parameter to install fedora 18,but always fail.

loopback loop0 (hd0,msdos5)/Fedora-18-Alpha-x86_64-DVD.iso
linux (loop0)/isolinux/vmlinuz boot=isolinux inst.repo=hd:/dev/sda5:/
initrd (loop0)/isolinux/initrd.img

where is the wrong?

[DBelton]

Moved into the rawhide sub-forum since it's for F18 issues at the moment

Are you trying to do an upgrade, or a clean install? I don't think anaconda in F18 will do an upgrade currently.

And also, from what I have seen of F18, I really wouldn't recommend anyone installing it right now unless you really want to have numerous problems. F18 is the worst release I have encountered this close to an alpha release.

[thkang]

sorry for being uninformative but method described by OP didn't worked for me with F17. I'm waiting for F18 livecds to come out. Did you succeed in directly booting iso from grub with f17? thanks very much

[DBelton]

Currently, there is really only one way to upgrade from F17 to F18 and that is using yum. I don't believe they have the capability in Anaconda currently to upgrade from the install media, and preupgrade doesn't work, either.

Currently this is about the only way to do an upgrade:

su -
(root password)

First install the new Fedora 18 gpg key

rpm --import https://fedoraproject.org/static/DE7F38BD.txt

Upgrade all packages with

yum update yum
yum clean all
yum --releasever=18 --disableplugin=presto distro-sync

Due to DisplayManagerRework you have to re-enable your display manager by

 systemctl enable --force gdm.service  


If you are using GDM (the default if you are running Gnome)

If gdm does not offer you a login prompt (just a "spinner"), or if you have other issues related to polkit failing to start, run

yum reinstall polkit systemd
systemctl restart polkit.service
systemctl restart gdm.service

Edit:

You also might want to make sure that all of the updates-testing repos are enabled before you do the distro-sync since F18 package updates are all pretty much in updates-testing