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Windows 8 ISO not bootable in UEFI mode


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#1 Holmes.Sherlock

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Posted 10 August 2013 - 08:00 AM

Recently I have got an HP Pavilion 15-e034TX notebook which comes with InsydeH20 firmware. It supports either UEFI-Legacy or UEFI-only modes. The details of what each mode means, have a look at the image below.

 

fcj3.jpg

 

If I set the mode to Legacy Support <-- Disabled (i.e. UEFI-BIOS), my Windows 8 DVD does not boot. But, it boots perfecty fine if I set Legacy support <-- Enabled (i.e.n BIOS/Legacy/CMS mode). Initially I thought it to be some sort of implementation *quirk* of UEFI in InsydeH20 firmware until I tried booting an Ubuntu 13.04 DVD in UEFI mode. The fact that Ubuntu booted fine made me believe that the problem is not with UEFI but in the ISO image. Confirming my belief, a little bit of googling revealed,

 

I tried both the methods, but none worked. Also I tried Windows 7 USB/DVD download tool and Rufus (with GPT partition scheme for UEFI computer). Results were same, i.e. UEFI fails but Legacy works.

 

My question is has anyone tried booting Windows 8 in UEFI mode or been able to convert it UEFI bootable, either on USB or on DVD? Let me know the procedure.



#2 Holmes.Sherlock

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Posted 10 August 2013 - 05:17 PM

An update.

 

I enabled EFI support in VMware following this tutorial.

 

If I configure a VM by setting Guest OS <-- Other, Version <-- Other 64 bit, Ubuntu 13.04-64 bit boots fine in UEFI mode.

 

uhp9.png

 

I tried to create an UEFI bootable Windows 8 ISO by following the instructions here, (assuming that I virtually the existing non-bootable ISO as K: drive)

oscdimg -m -o -u2 -udfver102 -bootdata:2#p0,e,bK:\boot\etfsboot.com#pEF,e,bK:\efi\microsoft\boot\efisys.bin K:\ E:\Win8.iso 

If I configure a VM by setting Guest OS <-- Other, Version <-- Other 64 bit or Guest OS <-- Microsoft Windows, Version <-- Windows 8 64 bit, resulting ISO does NOT boot.

 

6wfo.png



#3 cdob

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Posted 10 August 2013 - 06:19 PM

Which Windows 8 DVD do you use?

A english Windows 8.1 Preview x64 does boot from VWware UEFI
firmware = "efi"
http://windows.micro...s-8/preview-iso

#4 Holmes.Sherlock

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Posted 11 August 2013 - 01:34 AM

Which Windows 8 DVD do you use?

A english Windows 8.1 Preview x64 does boot from VWware UEFI

firmware = "efi"
http://windows.micro...s-8/preview-iso

 

 

Yes, this one works. But after it restarts after initial loading, it drops me to EFI shell once again.



#5 cdob

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Posted 11 August 2013 - 09:02 AM

Yes, this one works. But after it restarts after initial loading, it drops me to EFI shell once again.

That's strange. UEFI boot does work here, installation does finish and reboot works still.
Do you use virtual IDE controller?
Can you press Escape at UEFI boot and select boot device?




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