CentOS Forgot boot password

System: centos6.6, forget the power-on password, enter the single-user mode to reset, the following is the operation process.

1. Reset (restart) The Linux system, in the appearance of the interface, please click Enter to ensure that must be fast, only for a few seconds.

2. Click Enter to enter:

3. Select the second item and click on the "E" key on the keyboard to enter:

4. Using the kernel of the black logo in the upper and lower key selection, click on "E" to enter the edit (edit) page:

5. At the end of the line, add a space, and then enter single to tell the Linux kernel that the next step is to enter one-user mode and click Enter:

6. Go to the previous interface

7, click on the keyboard "B", to restart the operation, in the following the interface of the #, the system will automatically stop, enter passwd here, is the command to change the password:

7. After you press ENTER, the Changingpassword for user root appears, which is the updated password entered in the new Unixpassword below, and note that the input will not show what you entered.

After pressing ENTER, you will be prompted to enter again, confirming once:

8. When the successfully appears, change the password successfully!

9. Next, enter the following # symbol: Reboot reboot.

CentOS Forgot boot password