Dual boot multiple fedora verions

[poma]

On 23.11.2014 21:47, Chris Murphy wrote:
> On Sun, Nov 23, 2014 at 1:40 PM, poma <pomidorabelisima at gmail.com> wrote:
> 
>> Sure,
>> shared single /boot with a extlinux/extlinux.conf
> 
> That's a good idea also. Single /boot means one grub.cfg or
> extlinux.conf. And the kernels each have distinct naming conventions
> between distro versions so no conflicts there. Grubby will update the
> menu entries when new kernels are installed.
> 

/boot/extlinux/extlinux.conf
ui menu.c32
menu title The EXTLINUX bootloader
timeout 50

label Fedora (3.17.3-300.fc21.x86_64) 21 (Twenty One)
  kernel /vmlinuz-3.17.3-300.fc21.x86_64
  append root=UUID=...
  initrd /initramfs-3.17.3-300.fc21.x86_64.img

label Fedora (3.17.3-300.fc21.i686) 21 (Twenty One)
  kernel /vmlinuz-3.17.3-300.fc21.i686
  append root=UUID=...
  initrd /initramfs-3.17.3-300.fc21.i686.img

label CentOS Linux (3.10.0-123.9.3.el7.x86_64) 7 (Core)
  kernel /vmlinuz-3.10.0-123.9.3.el7.x86_64
  append root=UUID=...
  initrd /initramfs-3.10.0-123.9.3.el7.x86_64.img

label Memtest86+ 5.01
  kernel /memtest86+-5.01

label BFO boot.fedoraproject.org - iPXE
  kernel /ipxe.lkrn

Yeah, 
of course should be done for each new installation - the initial entry point and that's it, the rest is covered via grubby.