• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer navigation

The Geek Diary

  • OS
    • Linux
    • CentOS/RHEL
    • Solaris
    • Oracle Linux
    • VCS
  • Interview Questions
  • Database
    • oracle
    • oracle 12c
    • ASM
    • mysql
    • MariaDB
  • DevOps
    • Docker
    • Shell Scripting
  • Big Data
    • Hadoop
    • Cloudera
    • Hortonworks HDP

efibootmgr Command Examples in Linux

by Deepika

The “efibootmgr” command in Linux is used to manage the boot options stored in the firmware’s non-volatile RAM (NVRAM) on UEFI-based systems. This command can be used to view, add, modify, and delete boot entries, as well as change the boot order and set the default boot entry. The efibootmgr command is particularly useful when working with systems that have multiple boot options and need to change the boot order or add new boot options.

efibootmgr Command Examples

1. List the current settings then bootnums with their name:

# efibootmgr

2. List the filepaths:

# efibootmgr -v

3. Add UEFI Shell v2 as a boot option:

# sudo efibootmgr -c -d /dev/sda1 -l \EFI\tools\Shell.efi -L "UEFI Shell"

4. Change the current boot order:

# sudo efibootmgr -o 0002,0008,0001,0005

5. Delete a boot option:

# sudo efibootmgr -b 0008 --delete-bootnum

Filed Under: Linux

Some more articles you might also be interested in …

  1. iostat Command Examples in Linux
  2. How to Create, restore, and delete snapshots of virtual machine images in RedHat Virtualization
  3. CentOS / RHEL : How to Disable / Enable direct root and non-root user ssh login
  4. service Command Examples in Linux
  5. pscp – ssh_init: Network error: Cannot assign requested address
  6. cryptcat Command Examples in Linux
  7. Permission Table for a File/Directory And File System Users Types
  8. Configuring Persistent Storage in CentOS/RHEL 5,6 for Single Path using udev rules
  9. touch: command not found
  10. conntrack Command Examples in Linux

You May Also Like

Primary Sidebar

Recent Posts

  • nixos-rebuild Command Examples in Linux
  • nixos-option: Command Examples in Linux
  • nixos-container : Command Examples in Linux
  • nitrogen Command Examples in Linux

© 2023 · The Geek Diary

  • Archives
  • Contact Us
  • Copyright