GRUB2 and default OS boot option

[linuxero]

Hi;

Today, I was installing Mageia 4 to someone with Windows 7 installed. I chose GRUB2 as boot loader and chose Windows 7 to be the default OS to boot if the user does not choose otherwise..unfortunately, GRUB2 Menu always has Mageia as the default OS to boot when the computers starts..

The strange thing is that according to mageia and MCC Windows 7 is installed to /dev/sdb1, and indeed it is, still, in the GRUB2 Boot Menu it says something like: "Microsoft Windows 7 (ond /dev/sda1)"

Has anybody experienced the same problem with GRUB2?

Do you think this is a bug I should report?

Thanks