After CentOS is installed, add the Windows boot item to grub2.

After CentOS7 is installed, resume Windows boot. the following content is added to the cfg file. after restarting, you can see the Windows boot item and enter the win10 system smoothly. ### BEGIN/etc/grub. d/30_os-prober ### menuentry & #39; Windows10 (loader) (on/dev/sd

Recover Windows boot after CentOS 7 installation

According to the practices in the website/boot/grub2/grub.cfgAfter the following content is added to the file, you can see the Windows boot item after restart and enter the win10 system smoothly.

### BEGIN /etc/grub.d/30_os-prober ###menuentry 'Windows 10 (loader) (on /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-chain-140E68540E6830C2' {    insmod part_msdos    insmod ntfs    set root='hd0,msdos1'    chainloader +1}### END /etc/grub.d/30_os-prober ###

Note that,set root=It is followed by the partition where the Windows system boot is located, that is, the Windows system disk, which is generally a drive C.hd0It refers to the first hard disk.msdos1It refers to the first partition.