In Linux, The init level is set to 6 (restart) or not supported in the/etc/inittab file. inittabinit
If you accidentally set the init level in the/etc/inittab file to 6 (restart) or not, the system cannot start normally. This blog explains how to solve this problem through Grub.
1. During Linux Startup, Press Esc to enter the Grub Interface
2. Press e to modify the configuration of the current Linux System
3. Select the second row, press the e key, and perform the following steps:
1) Add 1 after the command line appears (single user mode );
2) Press Enter to receive the operation and return to the current Linux configuration page;
3) Press B to restart Linux.
4. After the restart, go to the Linux system and modify the/etc/inittab file. Change the init level to what you want. For example, change the init level to 3 (full multi-user mode)
Id: 3: initdefault
This blog is the original blogger, reproduced Please attach the original blog address: http://blog.csdn.net/jeff_fangji/article/details/43916085