What should I do if I cannot boot Windows 7 after installing CentOS?

Problem description:

When installing Centos7 on a computer Windows 7 system, the Windows 7 boot menu cannot be found after installation.

Cause analysis:

Because CentOS 7 has adopted the new grub2 system, you need to enter the /boot/grub2 directory and use vi to edit the grub.cfg file.

Solution:

Modify the Grub2 boot of Centos 7 and add the Windows startup item.

1. Open the configuration file

sudo vi /boot/grub2/grub.cfg

2. Add configuration

Find BEGIN /etc/grub.d/30_os-prober and add the following configuration

menuentry "Windows 7 (loader) (on /dev/sda1)" {
insmod ntfs
set root=(hd0,1) #由于我的windows安装在硬盘的C盘，故（hd0,1)
chainloader +1
}

Recommended tutorial: centos tutorial

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