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

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