centos7与之前版本不同,在/boot/grub/下没有 grub.conf文件,但在/etc/grub2/grub.cfg可找到帮助信息 [root@za default]# cat /boot/grub2/grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by grub2-mkconfig using templates # from /etc/grub.d and settings from /et…