Dual boot multiple fedora verions

[poma]

On 23.11.2014 19:52, Andy Campbell wrote:
> Is there an elegant way to install two versions of Fedora at the same 
> time ?
> 
> I like to keep the existing version running, while I test/setup new 
> version, then swap when I'm happy everything is running ok.  Previously 
> I've done with a boot loader like Air-Boot  ( http://sourceforge.net/
> projects/air-boot/ ) and partitioned my hard drive with
> 
> p1  boot1  ( F19)
> p2  boot2  ( F20)
> p3  LVM
>     / for F19
>     / for F20
>     /home 
>     ...
> 
> Then told the installer to use the relevant /boot to install the 
> bootloader.  However that sort of broke from F18 and I've had to use the 
> workaround in bug 872826 to get that to work.
> 
> Can I just use grub2 ? to manage booting, I guess one version of F20 will 
> have to be the owner.  How will updates work, can they both update the 
> grub2 config when the kernel is updated ?  I've googled around and not 
> really found any simple solutions. This artificial looks possible, but 
> seem to require some manual fiddling around https://
> www.happyassassin.net/2014/01/08/how-to-do-manual-multi-boot-
> configuration-with-fedora/
> 
> I don't think its too much of a mad idea to want to do a staged upgrade 
> to next version, and I quite like have a clean install to get rid of all
> the stuff I've installed just to play with.
> 
> - Any suggestions, or link's I haven't found.
> 
> Thanks in advance
> Andy
> 

Sure, 
shared single /boot with a extlinux/extlinux.conf