I was following http://bleeptobleep.blogspot.com/2013/02/mac-install-windows-7-or-8-on-external.html and successfully installed Windows 8.1 on a WD Element 2TB USB 3.0, without any issue.
However, since the performance was really poor to run Win8.1 on that WD Element, I purchased a LaCie Little big Thunderbolt 512GB (256GB * 2 RAID), I formated the two Disk as simple NTFS format (i.e. RAID not enabled), and deployed Win8.1 installation and enabled bcdboot on the first disk, the processes were:
imagex.exe /info C:\wim\install.wim
imagex.exe /apply C:\wim\install.wim 1 o:
o:\windows\system32\bcdboot o:\windows /f ALL /s b:
So b: is the MBR primary section (500MB), and o: is a partition (60GB) on the thunderbolt disk 1 (256GB).
However, after rebooting from my iMac, while I tried to start the normal Win8.1 installation, I saw the Win8 BCD boot error: 0xc000000e, basically it prompts me that "Your PC Needs to be Repaired", displayed 9 options by pressing F8 key, I tried each one of them but no one even worked...
I really need help at this point, appreciate for any help!
Have you tried Windows "slow" startup? This Apple Support link suggests it will resolve issues with Thunderbolt devices in Windows 8.
Now, how do you disable "fast" boot when Windows won't start? Try entering Safe Mode. If you can get this far, good indication that you are dealing with a driver issue.
Anyway, you'll need to access Windows Recovery Environment, more details can be found in Windows Help. From here you should be able to access the Startup/Shutdown settings and uncheck the "Turn on fast startup".
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