云服务器centos7 设置启动内核

time

首先查看当前系统有几个内核cat /boot/grub2/grub.cfg |grep menuentry设置默认的启动内核grub2-set-default 'CentOS Linux (4.18.3-1.el7.elrepo.x86_64) 7 (Core)'验证是否修改成功grub2-editenv list卸载多余内核rpm -qa | grep kernel

yum remove