Re: Windows 8 EFI unbootable after F19-TC1 installation.

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On Jun 6, 2013, at 2:22 PM, A.J. Werkman <AJ.Werkman@xxxxxxxxxxxx> wrote:
> Booted F19TC1 rescue in EFI mode.
> 
> The output of efibootmgr --verbose is:
> 
> BootCurrent: 0007
> Timeout: 1 seconds
> BootOrder: 0000,0007,0008,0005,0003,0006,0004
> Boot0000* Windows Boot Manager    HD(2,96800,31800,06701451-3ec2-4b01-8dac-17f25a3c6bd4)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* SanDisk SDSSDH2256G    BIOS(2,0,00)AMBO
> Boot0004* IBA GE Slot 00C8 v1381    BIOS(6,0,00)AMBO
> Boot0005* TSSTcorp CDDVDW SH-S223C    BIOS(3,0,00)AMBO
> Boot0006* hp v135w 0.00    BIOS(2,0,00)AMBO
> Boot0007* UEFI: TSSTcorp CDDVDW SH-S223C    ACPI(a0341d0,0)PCI(1f,2)03120a000200ffff0000CD-ROM(1,8309,2fac)AMBO
> Boot0008* UEFI: TSSTcorp CDDVDW SH-S223C    ACPI(a0341d0,0)PCI(1f,2)03120a000200ffff0000Vendor(ba7c46d1-9c5e-4fc8-943d-1a491f23fe01,c2770200000277c222001d0000000000001d0008000000000800450c1f130000ec0200000100000101004665646f72612031392d544331207838365f3634202020202020202020202020)AMBO
> Boot000A* SanDisk SDSSDH2256G    BIOS(2,0,00)AMBO

If the computer is in UEFI mode boot (not legacy boot) then GRUB shouldn't even appear on-screen, and the computer will immediately boot Windows. Only if the firmware is being told to use the CSM should it do so, and then load and execute the code in the MBR, and thus bring up GRUB BIOS from the PXE installation.

So the question is, does Windows boot if the computer's firmware is set to UEFI boot.



Chris Murphy
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