Before upgrading your OS version we must take the backup of our system firstly. For upgrading to Fedora 8 from Fedora 7 follow the given below commands:
Update your packages:
yum update
Run following command to clear the yum cache:
yum clean all
Then run following command to install fedora 8 release packages:
rpm -Uvh ftp://ftp.uni-bayreuth.de/pub/redhat.com/fedora-archive/linux/releases/8/Everything/ppc64/os/Packages/fedora-release-8-3.noarch.rpm
rpm -Uvh ftp://ftp.uni-bayreuth.de/pub/redhat.com/fedora-archive/linux/releases/8/Everything/ppc64/os/Packages/fedora-release-notes-8.0.0-3.noarch.rpm
rpm -Uvh ftp://ftp.uni-bayreuth.de/pub/redhat.com/fedora-archive/linux/releases/8/Everything/ppc64/os/Packages/fedora-release-notes-8.0.0-3.noarch.rpm
Now this is the time to run upgrade over the machine:
yum upgrade
If it stops with an error like this one:
---> Package orca.i386 0:2.20.0.1-1.fc8 set to be updated
--> Finished Dependency Resolution
--> Finished Dependency Resolution
Error: Missing Dependency: gecko-libs = 1.8.1.8 is needed by package yelp
simply uninstall the package that is causing the problem (in this case yelp) (I only had to do this with the yelp package which doesn't seem to be overly important)...
yum remove yelp
Ref. : http://www.howtoforge.com/upgrading-fedora7-desktop-to-fedora8
For upgrade from Fedora8 to Fedora 9, use below given release RPMs and other are same as above
rpm -Uhv http://mirror.liberty.edu/pub/fedora/linux/releases/9/Fedora/i386/os/Packages/fedora-release-9-2.noarch.rpm http://mirror.liberty.edu/pub/fedora/linux/releases/9/Fedora/i386/os/Packages/fedora-release-notes-9.0.0-1.noarch.rpm
Upgrading from Fedora 9 to Fedora 10, follow below given URL:
http://www.unix-tutorials.com/go.php?id=3918
http://www.unix-tutorials.com/go.php?id=3918