Linux common boot issues and basic system recovery
Familiar with common Linux boot problems and gets hands on experience on basic system recovery with various lab sessions
Updated on Sep, 2023
Language - English
Course Description
By the end of the course you will:
Be able to familiar with common Linux boot problems and gets hands on experience on basic system recovery with various lab sessions.
Be able to confidently use the Linux operating system to increase your productivity and Career.
Be able to perform everyday computing tasks from the Linux command line.
Troubleshooting Linux Boot Problems (Basic System Recovery)
Introduction
Overview of the Course Module
Links to download RHEL, CentOS, VMWare Workstation or Oracle Virtual Box
Create Linux OS 8 Template using VMWare Workstation
Installation of Linux OS 8 using VMWare Workstation
Installation of Linux OS 8 using Oracle Virtual Box
Connect from putty
About RedHat Linux 8
Overview of Linux OS 8
Features of Linux OS 8
Controlling Services and Daemons
Introduction to Systemd, Systemd units
Lab on systemctl command and journal
Controlling the Boot Process
Booting Process of a RHEL 8 System
Selecting a systemd target, rebooting & shutting
Lab Exercise - Determine the default target and change the target into running system.
Lab - Selecting a rescue mode at boot time
Resetting a root password
Repairing Systemd Boot Issues
Booting RHEL 8 into Rescue Mode
Booting RHEL 8 into Emergency Mode
Enabling the Early Debug Shell
Repair a File System Issues at boot
Lab - Repair a File System
Troubleshooting Boot Problems based on RHEL7
initramfs file is missing
grub conf is missing
mbr is corrupted
fstab file missing or bad entry
Last Lecture
GRand Unified BootLoader (Grub2)
Overview of Grub
Grub Configuration file
Features of Grub2 and its comparison with Legacy Grub
Practical Lab Session - Different commands to run at Grub2 prompt
Practical Lab Session - Boot from Grub (Selecting Kernel & Initramfs)
Practical Lab Session - How to make your grub password protected
Goals
What will you learn in this course:
- Troubleshooting Linux Boot Problems
- Basic System Recovery
- Booting of Linux with systemd
- Initramfs file missing/Corrupted
- Grub related issues
- Master Boot Record missing/corrupted
- Critical files are missing like mount binary
- Familiar with different systemd targets & new commands
- Practice Lab Session on default target, list dependencies & journalctl etc
- Booting modes in Red Hat Linux
- Rescue/Emergency/Troubleshooting mode in Red Hat Linux
- Resetting the Root Password Using rdbreak
- Installation of Linux Operating System
- GRand Unified Boot Loader (Grub2)
Prerequisites
What are the prerequisites for this course?
- PC or Laptop with internet Connection
- There is no formal prerequisites for this course; however, previous system administrator experience on Linux operating system would be very beneficial.
Curriculum
Check out the detailed breakdown of what’s inside the course
Introduction
1 Lectures
-
Introduction
04:59
04:59
Installation of Linux Operating System
7 Lectures
Overview of RHEL 8
6 Lectures
Controlling the Boot Process
9 Lectures
Troubleshooting Boot Problems based on RHEL7
4 Lectures
GRand Unified Boot Loader (Grub2)
8 Lectures
Instructor Details
Shikhar Verma
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