Is it possible to install grub into the EFI partition on a windows drive and chain load it? I got a baytrail tablet a few weeks ago, and I want to boot linux from the SD card. Bay trail can't boot natively from SD, I hope by installing grub into the existing windows drive, I can load the kernel and then load the rest from the SD card. Will this even work? I've heard of it being done, but I can't find any instructions. This is one of those weird 32 bit efi/64 bit processor systems. Fortunately, someone just added support for such systems in grub and packaged it for Debian (my os of choice), so I can boot off of a flash drive right now. The tablet isn't really useful with a usb drive hanging out.

The installer will (should) find the EFI partition and create a directory there for the grub code. /boot/efi will be a separate mount.
Install as normal - grub itself will install under /boot/grub (probably - I don't use Debian). Should be nothing for you to do to get the setup you want - however all UEFI implentations are vendor specific.
Regardless, it shouldn't affect your Win system.

Edit: - looks like this might be useful if you get into trouble.