I have managed to boot into the installed Centos system, without using the KDE
live CD.
By pressing F9 when turning on the laptop, I got the choose boot menu. When
the menu appeared, it had the old Fedora install, the current Centos install
as well as the Windows install.
When I chose the Centos install it showed the GRUB menu and booted into Centos
without error. This confirms that the Centos entry in the EFI data is still
valid.
Once booted I then tried going through the process of running efibootmgr
again. Once again, it looked to work perfectly, but for some reason the
changes are not permenant, and if left alone, the laptop boots into Win8.
I'm out of ideas now.
Gary
[root@gary ~]# efibootmgr -v
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 0002,3002,0000,0003,2001,2002,2003
Boot0000* Fedora
HD(2,145800,64000,14c4ac1d-abd8-4121-84ee-c05a825920de)File(\EFI\fedora\shim.efi)RC
Boot0002* Windows Boot Manager
HD(2,145800,64000,14c4ac1d-abd8-4121-84ee-c05a825920de)File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.
{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
Boot0003* CentOS Linux
HD(2,145800,64000,14c4ac1d-abd8-4121-84ee-c05a825920de)File(\EFI\centos\shim.efi)
Boot2001* USB Drive (UEFI) RC
Boot2002* Internal CD/DVD ROM Drive (UEFI) RC
Boot3000* Internal Hard Disk or Solid State Disk RC
Boot3002* Internal Hard Disk or Solid State Disk RC
[root@gary ~]# efibootmgr -b 0000 -B
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 0002,3002,0003,2001,2002,2003
Boot0002* Windows Boot Manager
Boot0003* CentOS Linux
Boot2001* USB Drive (UEFI)
Boot2002* Internal CD/DVD ROM Drive (UEFI)
Boot3000* Internal Hard Disk or Solid State Disk
Boot3002* Internal Hard Disk or Solid State Disk
[root@gary ~]# echo $?
0
[root@gary ~]# efibootmgr -o 2002,2001,0003,0002
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 2002,2001,0003,0002
Boot0002* Windows Boot Manager
Boot0003* CentOS Linux
Boot2001* USB Drive (UEFI)
Boot2002* Internal CD/DVD ROM Drive (UEFI)
Boot3000* Internal Hard Disk or Solid State Disk
Boot3002* Internal Hard Disk or Solid State Disk
[root@gary ~]#[root@gary ~]# efibootmgr -v
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 0002,3002,0000,0003,2001,2002,2003
Boot0000* Fedora
HD(2,145800,64000,14c4ac1d-abd8-4121-84ee-c05a825920de)File(\EFI\fedora\shim.efi)RC
Boot0002* Windows Boot Manager
HD(2,145800,64000,14c4ac1d-abd8-4121-84ee-c05a825920de)File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.
{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
Boot0003* CentOS Linux
HD(2,145800,64000,14c4ac1d-abd8-4121-84ee-c05a825920de)File(\EFI\centos\shim.efi)
Boot2001* USB Drive (UEFI) RC
Boot2002* Internal CD/DVD ROM Drive (UEFI) RC
Boot3000* Internal Hard Disk or Solid State Disk RC
Boot3002* Internal Hard Disk or Solid State Disk RC
[root@gary ~]# efibootmgr -b 0000 -B
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 0002,3002,0003,2001,2002,2003
Boot0002* Windows Boot Manager
Boot0003* CentOS Linux
Boot2001* USB Drive (UEFI)
Boot2002* Internal CD/DVD ROM Drive (UEFI)
Boot3000* Internal Hard Disk or Solid State Disk
Boot3002* Internal Hard Disk or Solid State Disk
[root@gary ~]# echo $?
0
[root@gary ~]# efibootmgr -o 2002,2001,0003,0002
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 2002,2001,0003,0002
Boot0002* Windows Boot Manager
Boot0003* CentOS Linux
Boot2001* USB Drive (UEFI)
Boot2002* Internal CD/DVD ROM Drive (UEFI)
Boot3000* Internal Hard Disk or Solid State Disk
Boot3002* Internal Hard Disk or Solid State Disk
[root@gary ~]#
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