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In Linux, you can recover your password easily via a root account. The worst situation arises when you forget your root account password. In such a case, you cannot reset the root account password using a regular user account. This won’t allow a user account to perform such tasks in general.
This article will cover the steps to recover your CentOS root password. So, let’s move ahead to check the steps in the article.
In CentOS, it’s allowed to run the scripts from the initramfs debug the shell at certain points, come with a root shell, and continue till the shell exists.
Whereas this is mostly done for debugging, it can be used to recover a lost root password.
The first step is to reboot the computer and press the “Esc” key shown in the kernel line.
Then, select the kernel line and press the ‘e’ key to edit.
Once you press “e” select that entry. After selecting that entry, below kernel command below will be shown.
Once you Press “e” to select that entry. After selecting that entry, below kernel command will be shown.
Type the “End” key to move the cursor to the end of it. Type “rd.break enforcing=0”
After that press “Ctrl+x” to save all the changes. Next, you’ll see the Initramfs debug.
Now, we have to gain access of reading and writing permissions to /sysroot by typing the below command: #mount -o remount,rw /sysroot
Next is to switch into the chroot and type
#chroot /sysroot
Here, /sysroot act like the root of the file system tree. Next, you have to set a new root password.
passwd root
Now, relabel the files and type the command #touch /.autorelabel
Enter the “exit” command twice.
The first one will exit from the chroot jail.
The second one will exit from the initramfs debug shell and reboot the system.
After rebooting the system, you will get the login prompt. Once the reboot is done you can use the newly set root password.
Resetting the root password in CentOS involves booting into single-user mode, remounting the file system as read-write, and then changing the password using the passwd command. This process ensures that access to the root account is regained in case the password is forgotten or lost.
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