Unable to boot windows7 after installing centos

Problem:

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

Reason:

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.

(Recommended tutorial: centos usage tutorial)

Solution 1:

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

1. sudo vi /boot/grub2/grub.cfg

2. Find

at the back Added:

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
   }

Solution 2:

The system automatically detects whether there are other systems

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

Linux can only recognize Ext3/4, fat32 format, if Windows is an NTFS format disk partition, Grub2 will not recognize it. Recommended related video tutorials:

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