Set up dual boot Debian (Mint LMDE) Linux + Windows 8.1 **without** efi

The specifics is that in my case Windows 8.1 is installed not in EFI mode: so the partition table is in msdos/fat format and there is no efi partition.

Unfortunately:

1. All how-tos and manuals I've found about dual-booting Linux with Windows 8.1 are about EFI.
2. All how-tos and manuals I've found about setting dual-boot with GRUB without EFI are about Windows ≤7 . And these instructions didn't work for me.

How can I setup correctly working dual-boot?

Linux + Windows 8.1 without EFI.

I would be grateful for your answer.