No no installed in EFI mode, but booted in legacy mode just like windows 7, this works for regular computers and the machine actually thinks it booted in EFI but doesn't have the graphical problems, like in windows 7 using this method i was able to see the whole 2nd part of the install (which would be blind otherwise) and was able to see the windows logo after it for the first boot then BSOD.
What makes this work is the fact that the bootloader instead of being installed in the PBR or that instead of using the EFI bootloader to boot windows, you use a pen drive with the bootloader on it formatted as mbr, it boots pbr -> mbr -> bootmgr on the pen drive, and then loads the winload.exe on windows 7 partition, then it boots, on a normal computer that is, it sees everything as EFI boot (gpt partition no hybrid ********, 2tb hdd all the goodies) but you actually have an image and no black screen on boot because it is booted as legacy, this would solve my problem, I don't know if it would work with you but maybe it would since refind has the ability to legacy boot.
Now this all works somehow on windows 7 and windows 8 (and i am sure windows 10) when it comes to a normal pc, on the macbook it does't, windows 7 it starts booting you can see windows 7 logo and then bsod, on windows 8 you get a missing winload.exe
Regarding moving Windows from one computer to another: make sure it is prepared to see a different SATA controller once it boots. To that end, google and run MergeIDE just before you turn it off for the last time on the "donor" PC.
it is a non issue right now, i was able to do the install completely on the macbook, i still got bsod.
If you see BCD errors it might be worthwile rebuilding the BCD to see if that makes a difference. (BCD might enumerate controller ports and devices slightly differently on the Mac and this will throw it off.) Boot off your Win8.1 pendrive, Shift+F10 to get to console and run bootrec /rebuildbcd.
I can try that thanks for the tip, but i think the bcd error was because, i started the install by booting the efi bootloader on a regular laptop, switched the hdd to the macbook, but started the install through my pen drive bootmgr (that i described above), it kinda confused the computer, first boot was on the efi bootloader second one was from bootmgr on an external pen drive, it didn't know where to store the bcd i guess, either way i am going to give your tip a try maybe it works, but in the end i am guessing i am going to be presented with the bsod when it is time to boot.
As for your progress, DAMN SON! there is some serious reversing going on your side, i wouldn't be able to pull that off, if anything is to come out of this thread is probably from your side, I am going to test your rebuildbcd tip and see if that works, I will none the less record a video of what i can do with the method i have been trying, so you get a better idea of what i am trying to accomplish.
best regards
EDIT 1
In the beginning of the thread you mention that you have no problem with windows 8.1 yeah that's normal, its a recent macbook air, my macbook is from 2010, it has an nforce chipset and nvidia 320m this is problematic i believe, whenever i try to install the nvidia gpu drivers i get a blackscreen on windows 8.1 if i efi boot, just like if i was booting windows 7, if i had a more recent macbook this wouldn't be a problem, I am thinking of getting a 2013 retina later this year, and i am sure my windows woes will be gone at least windows 8.1 and 10, as for windows 7 it is still a problem, unless we do something about it.
EDIT 2
Did an install again of windows 7, getting the error on the 2nd part of the install as i told you above, to be more specific i opened a terminal with shift f10 and cd to c:/windows/panther/setupact.log and surely at the end of the setup, there was an error: failed to modify boot entries gle = 2
so right now I know the error i have, I tried to use the bootrec /rebuildbcd but it says it can't find bootrec.exe on windows pe and on windows 7 dvd.
as for searching for the error on google, it has been hard to come across the same exact error, this is not good :s
EDIT 3
WELL HELLO THERE GORGEOUS!!!!!
Sorry the pics are upside down, i have camera problems...
no bootcamp drivers installed, its first boot.
I am afraid of turning the pc down.
You can see the disk is seen as GPT
with all the partitions behind the window
EDIT 4
Installed all the bootcamp drivers and it works no black screen after reboot, it boots correctly and detects my nvidia gpu
this is great.
EDIT 5
Success with windows 8.1 as well, i now have gpu acceleration as well, i imagine that the same works on windows 10
EDIT 6
Sleep and Hibernation is workng fine using this method
i am trying now to devise a way to modify it so we won't need a pen drive to launch bootmgr.
More to come soon!
BTW how are things going on your side of the barricade?
EDIT 7:
I was trying to find a more elegant solution that didn't involve having bootmgr on a pen drive,it turns out that there is one, but doesn't work on the macbook due to its efi limitations.
Since we are not able to launch legacy bootloaders on the hdd there is no way we can do the method without a pen drive.
So for the time being we are stuck with a pen drive, and that won't change unless your method works, if it does, then we are safe most likely, if not my method has to suffice.
