After restore of Windows partition Boot manager of Grub2 is no more present.
Now using RescaTux/SuperGrub i make boot and find Grub2 configuration on
hd0 msdos7 /boot/grub/grub.cfg
So Grub2 start correctly in dual boot on Windows 7 or Linux.
Now to restore old setting I’m logged on OpenSuse 13.1.
grub2-mkconfig -o /boot/grub2/grub.cfg
don’t change boot manager
Using autorepair of Rescatux see grub2.cfg on sda7 and configure it on sda, but don’t start GRUB2.
After I have probed configure using yust2 bootloader after boot via SuperGrub.
Setting on ‘mbr’ grub2 at startup compare but as prompt and don’t start.
I have proved also to set /dev/sda7 for grub position but don’t start.
Using Grub Customizer work correct to change grub2 settings, but don’t start.
I have also probed to install GRUB and not GRUB2, it work but don’t start.
After then i hare restored Windows mbr.
To start with OpenSuse I have to start using SuperGrub.