Dual Bootable Windows 7 & Red Hat 7

1st we have to install windows then install Red Hat 7 .

After installing Red Hat 7, we have to regenerate grub configuration file as follows:

<<< which partition of Windows is bootable ? >>> 

#fdisk   -l

<<>>

#blkid

<<< Edit Grub >>>

#vim /etc/grub.d/41_custom

<<< Let regenerate Grub Config file >>>

#grub2-mkconfig   -o   /boot/grub2/grub.cfg

reboot the System

After rebooting, we can get the Windows 7 & Red Hat 7 menu to boot on.