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[ubuntu] EFI Ubuntu gives "Invalid EFI File" when trying to boot Windows 7 legacy

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Hi guys, I'm new here - I've been creeping the forums for a similar problem for several hours now but have not found a situation similar to my own, basically it goes like this:

Drive 0 is a 500GB Windows 7, 64 bit. For whatever reason, the installer set up the partitions in legacy mode.

Drive 1 is a 400GB Ubuntu 13.04, 64 bit. This installer installed with EFI mode.

I can easily switch between Windows and linux by altering the boot order through my BIOS, but what I really want to do is to be able to load Linux through the Windows boot, (Which I've had some trouble with already) or boot Windows through Linux. (Which I've had some success)

So far, the closest I've come to having this work is having Windows 7 appear on the grub screen at boot, but when I select it, I get an error "Invalid EFI file" probably something to do with the fact Windows is in legacy mode.

I have no idea how to install Ubuntu in legacy mode, and have read several articles on converting, but don't want to go any further till I get some opinions?

Any help would be awesome!

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