Windows 8 install on MBR

I have a Notebook that dual-boots Arch Linux and Windows 8 via GRUB. After swapping hard drives, Windows couldn't boot anymore, and I've spent hours on fixing this to no avail. (I've cloned everything correctly, and the Windows Partition was readable, only the boot didn't work).

So I decided to reinstall Windows 8, but now the installer says, Windows can be installed on GPT-drives only when using EFI mode. But I'm using MBR, and I don't wan't to re-format my whole drive. I don't even want to use EFI after all.

I guess, Windows tries to install in EFI mode, since the automatic UEFI-/Legacy-selection of my BIOS boots the recovery disk in UEFI mode. But in Legacy-only mode the recovery disk simply doesn't boot.

So how can I install Windows 8 on MBR? There must be a way, since I've done it before, from the same recovery media.