RHEL 8 - Troubleshooting with Rescue Option

 Using the Rescue Option in RHEL 8.

First restart your server from the installation disk and select the Troubleshooting menu option.

From the Troubleshooting menu, select Rescue Red Hat Enterprise Linux System.  This option doesn't not overwrite your current configuration but only to load a rescue system.

 

The rescue system prompts user that it will try to find an installed Linux system and mount it on /mnt/sysimage.  Press 1 to accept the Continue option.

Once a valid RH OS installation was found and user is prompted that the system has been mounted under /mnt/sysimage.  At this point, user can press Enter twice to access the rescue shell.

At this point, your Linux installation is accessible through the /mnt/sysimage directory.  User can type chroot /mnt/sysimage.  At this point user  have access to the system root file system and you can access all tools that is needed to repair access of the system.

Once repair is completed, user can type exit and reboot to restart the system in a normal mode.