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Linux Common Boot Issues And Troubleshooting
Rating: 4.3 out of 5(84 ratings)
514 students

Linux Common Boot Issues And Troubleshooting

Familiar with common Linux boot problems and gets hands on experience on basic system recovery with various lab sessions
Created byShikhar Verma
Last updated 3/2026
English

What you'll learn

  • Common Linux boot issues
  • Basic System Recovery
  • Booting of RHEL 7 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 RHEL 7
  • Rescue mode in RHEL 7
  • Emergency mode in RHEL 7
  • Troubleshooting mode in RHEL 7
  • Resetting the Root Password Using rdbreak

Course content

5 sections • 39 lectures • 3h 45m total length

  • Introduction6:21

    Explore common Linux boot issues and hands-on troubleshooting through lab sessions. Understand boot stages, the boot process, grub issues, and recovery steps.

  • Linux Booting Process9:51
  • Run levels5:27
  • Booting RHEL 7 with systemd7:27
  • Initramfs file missing or Corrupted12:56
  • Grub related issues -17:02
  • MBR corruption - 15:31
  • MBR corruption - 24:04

    Repair a corrupted mbr by booting into rescue mode from a cd or dvd, mounting the system, and using grub install or grub setup to restore boot.

  • Critical files are missing like mount binary -13:01
  • Critical files are missing like mount binary -28:59
  • /boot corruputed - 16:01
  • /boot corrupted - 25:06

    Install the kernel and essential packages, install grub to the correct partition, repair a corrupted boot configuration file, and verify a successful reboot.

Requirements

  • PC or Laptop with internet Connection
  • There is no formal prerequisites for this course; however, previous system administrator experience on other operating system would be very beneficial.

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. 


                            LINUX Basic Course Outline


Troubleshooting Linux Boot Problems in Red Hat Linux (Basic System Recovery)

  • Linux Boot process

  • Booting of RHEL 7 with systemd

  • Lab on Basic System Recovery (Initramfs file missing/Corrupted)

  • Lab on Basic System Recovery (Grub related issues like stage 1.5/2 grub is missing)-Part1

  • Lab on Basic System Recovery (Grub related issues like stage 1.5/2 grub is missing)-Part2

  • Lab on Basic System Recovery (Master Boot Record missing/corrupted)

  • Lab on Basic System Recovery (Critical files are missing like mount binary)

  • Lab on Basic System Recovery (/boot fs is completely wiped out or corrupted)


Red Hat Enterprise Linux 7

  • Overview about RHEL7 with its new features

  • Comparison with RHEL 6

  • Lab on systemd service (Familiar with different systemd targets & new commands)

  • Practice Lab Session on systemctl status/stop/start/enable/disable <service>

  • Practice Lab Session on default target, list dependencies & journalctl etc


Booting modes in RHEL 7


  • Rescue mode in RHEL 7

  • Lab on rescue mode

  • Emergency mode in RHEL 7

  • Lab on emergency mode

  • Troubleshooting mode (Overview and Lab)

  • Lab on Recovering the Root password in RHEL7

    • Resetting the Root Password Using an Installation Disk 

    • Resetting the Root Password Using rd.break

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

Increase Swap In Linux

  • Overview of Memory/Swap

  • Increase swap size using swap partition

  • Increase swap using swap file


Who this course is for:

  • Graduate Students and also for those who are in job in Linux Administration & wants to get hands-on practical experience on troubleshooting & advance level of learning Red Hat Linux
  • IT professionals across a broad range of disciplines who need to perform essesntial administration tasks.

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