How to Configure and Customize Grub2 on CentOS 7 to Dual or Multi Boot With Windows 10
Configuring Grub 2 on CentOS 7 to Dual Boot with Windows 10 Operating System
Assumption: You have installed Windows 10 first and then Installed CentOS 7
Once you install CentOS 7 alongside your Windows OS, you may find that you cannot boot into Windows respectively.
References:
https://wiki.centos.org/HowTos/Grub2
https://dareneiri.github.io/Configuring-Grub-2-on-CentOS-7/
centos 7