Sometimes you forget stuff. I do. I forget important passwords for important websites sometimes. Retrieving your forgotten passwords for most websites is easy, all one has to do remember few details that were used when signing up for the service to get a password reset for an account.<\/p>\n
The difference is forgetting a password to a system or device with no easy way to reset it while locked out. CentOS 7 is one such system. If you forget the root password to your CentOS 7 machine, it\u2019s almost virtually impossible to reset it while you\u2019re locked out.<\/p>\n
This brief tutorial is going to show you a simple trick that you can use to reset your forgotten root password for CentOS 7 servers. This will definitely come in handy for webmasters who are locked out of your CentOS machine and can\u2019t sign on.<\/p>\n
This tutorial will only work if you have direct access to the machine or serial terminal access with boot menu options. You can\u2019t reset the root password if you\u2019re remotely connected since you need boot menu access.<\/p>\n
To get started, turn on the machine that you\u2019ve forgotten the root password on. For CentOS 7 devices, you\u2019ll be given 5 seconds at the boot menu to select the operating system kernel to boot into.<\/p>\n
That 5 seconds is important, because allows for \u00a0admins to select different kernels or edit existing kernel parameters before booting.<\/p>\n
At the boot menu, press e<\/strong> to edit the existing kernel (Core) as shown below.<\/p>\n <\/p>\n Next, scroll down to the list until you see the line underlined below ( ro<\/strong> ) . What we need to do is change that ro to rw and start into a bash shell. It should look like this rw init=\/sysroot\/bin\/sh.<\/strong><\/p>\n <\/p>\n <\/p>\n <\/p>\n Change the ro<\/strong> line to rw<\/strong> and add init=\/sysroot\/bin\/sh<\/strong><\/p>\n![\"Changing](\"http:\/\/rmohan.com\/wp-content\/uploads\/2016\/01\/centos7-forgot-root-password.png\")
<\/a><\/p>\n<\/a><\/p>\nrw init=\/sysroot\/bin\/sh<\/code><\/p>\n