recommend some info on hot to upgrade from F15 to F16 using preupgrade

[Jim]

On 03/02/2012 03:59 PM, Alan Cox wrote:
> On Fri, 2 Mar 2012 17:01:12 -0300
> Martín Marqués<martin.marques at gmail.com>  wrote:
>
>> That's all I want (what's in the subject).
>>
>> I've had some headaches with preupgrade, basically, I guess, because I
>> have /var on another partition.
> Preupgrade randomly fails anyway. Its great when it works but it's a bit
> of a russian roulette experience.
>
> 1. Make a backup
>
> 2. Check your backup
>
> 3. Install the fedora-release-* rpms from F16
>
> 4. Go to run level 3 (or 1) and a text mode console (this is vital for
> 15->16). If you don't then the desktop will go berzerk mid upgrade and
> it'll end in a nasty mess.
>
> 5. yum upgrade yum
>
> 6. yum upgrade
>
> 7. check your /boot/grub2.cfg looks sane. Whether you upgrade or use the
> CD or whatever F16 is incredibly broken here and frequently totally
> screws this up preventing booting from anything but rescue media. If its
> broken you may need to screw about by hand until it concedes defeat and
> generates you the right bits
>
> Reboot
>
> Fix up your services (as per F15 to F16 upgrade notes), something else
> Fedora makes a hash of however you upgrade.
>
>
> and then all should be well.
>
>
Believe me !!!
Do a clean install.
And partition your hard drive with gparted.
Give / 40 % and /home 60% and 1024 for Swap .
This way the next time you upgrade you will not format /home, format / 
only and do a fresh install.
Preupgrade never works as it should, Any third party apps you have will 
give you problems because of mismatch in Versions.
I have tried preupgrade a number of times and it never works right after 
upgrade.