This guide will show you how you can easily Dual Boot CentOS 7 with Windows 10. This should also work for dual booting CentOS 7 with Windows 7 & Windows 10.
By default, CentOS anaconda installer won’t configure grub to handle NTFS filesystem or partitions. So manual intervention is required for dual booting CentOS 7 with Windows 10.
How to Dual Boot CentOS 7 with Windows 10
Boot into your CentOS 7 machine and Mount the partition containing Windows installation. You can install gparted disk partition Manager to help you take a note of Windows Partition, just type the following command in the terminal
sudo yum -y install epel-release
sudo yum install -y gparted
sudo gparted
To be able to mount the NTFS filesystem on CentOS 7, install the following programs.
sudo yum -y install ntfs-3g fuse ntfsprogs ntfsprogs-gnomevfs
Edit the /etc/grub.d/40_custom file. Make a backup of it first.
sudo cp /etc/grub.d/40_custom /etc/grub.d/40_custom.original
Then edit the /etc/grub.d/40_custom file, open it with vi editor or nano.
sudo vi /etc/grub.d/40_custom
Add the following Lines at the bottom
Menuentry "Windows" {
set root=(hd0,3)
chailoader +1
}
You can change the menu entry title menu within the ” ” to reflect your windows os version though not necessary.
The line root=(hd0, 3) means the fourth partition on the first hard drive. Replace 3 with your windows partition number taken from gparted since my WIndows 10 partition on the picture below is at /dev/sda3
Run
sudo grub2-mkconfig -o /boot/grub2.cfg
Check the new configuration if it contains windows details
sudo cat /boot/grub.cfgReboot your system
sudo rebootYou should now be able to dual-boot CentOS 7 with Windows 10. Also read: