删除/boot rm -rf /boot
重启 reboot
将虚拟机关机,进入BIOS, 将CD推到最上面
F10 保存退出
进入急救模式,选择continus
chroot /mnt/sysimage/
mkdir /media/cdrom
mount /dev/cdrom /media/cdrom
(mount -o remount :rw /) 修改权限
重复挂载 mount /dev/cdrom /media/cdrom
ls /boot/
rpm -ivh /media/cdrom/Packages/kernel -3.10.0-229.e17.x86_64.rpm
rpm -ivh /media/cdrom/Packages/kernel -3.10.0-229.e17.x86_64.rpm --force
ls /boot/
grub2-install /dev/sda
ls /boot/grub2
grub2-mkconfig > /boot/grub2/grub.cfg
exit
exit
从本地进入开机