diff --git a/linux/linux单用户.md b/linux/linux单用户.md
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+启动按 esc 进入启动菜单选项
+按 e 进入grub 编辑 
+在linux 后面追加  init=/bin/bash
+按ctrl+x 启动
+mount -o remount,rw /  挂载可读权限
+
+屏蔽 service 启动
+systemctl mask systemd-tmpfiles-setup.service
+恢复启动
+systemctl unmask systemd-tmpfiles-setup.service
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