ctrl+D error is one of the common errors occur when the root user tries to make any Permanent entry in fstab file & by mistake changes the path location of mounted file systems in os, it gives error while rebooting the system and fails to load. fstab is a system configuration file on the Linux operating system that contains information about major filesystems. This file is located in /etc directory and can be viewed like “cat /etc/fstab”. We have set steps to recovery system from ctrl+D error. Boot system using bootable CV/DVD of Linux of the current version installed Read ctrl+D error for the exact issue Connect using Root User and it will connect you in single-user mode Access /etc/fstab file and make required changes  Try normal system reboot