{{tag>linux boot uefi ventoy}}
======boot tools======

=====list drives=====
  * ''df -h''
  * ''sudo fdisk -l''
  * ''lsblk'' flags:
    * ''-f'' to get more verbose output
    * ''-o'' to get specific output columns, use ''-h'' option to see list of column options
  * ''blkid''
  * ''ls -l /dev/disk/by-id'', additional list options:
    * ''ls -l /dev/disk/by-uuid''
  * ''sudo lshw -class disk''
  * ''findmnt''

=====UEFI=====

====efibootmgr====
This is a command line utility that allows handling of the UEFI boot menu.

===Installation:===
  *Debian or derivative: ''sudo apt install efibootmgr''
  *Arch / Manjaro: ''sudo pacman -S efibootmgr''

===Display Current Setting===
Simply ''efibootmgr'' or ''sudo efibootmgr'', use the -v flag for a more verbose output

===Change Boot Order===
Take the displayed BootOrder and and append and adjust to the following command to adjust: ''sudo efibootmgr -o''\\
Current: ''BootOrder: 0003,000A,0002,000B,0001,0006,0007,0008,0009,0000''\\
Adjusted: ''sudo efibootmgr -o 0002,000B,0003,000A,0001,0006,0007,0008,0009,0000''\\

===Add UEFI Boot Entry ===
Install command ''grub-efi'': ''sudo apt install grub-efi''\\
Mount the the EFI System Partition:  ''sudo mount /dev/sdd1 /boot/efi''\\
Install Grub boot loader: ''sudo grub-install /dev/sdd --target=x86_64-efi --efi-directory=boot/efi/''\\

===Change boot selection time===
''sudo efibootmgr -t 10'' to set boot selection time to 10 seconds 

===Delete a boot entry===
''%%sudo efibootmgr --delete-bootnum --bootnum 0%%''

===Links===
  *[[https://www.linuxbabe.com/command-line/how-to-use-linux-efibootmgr-examples|Use Linux efibootmgr Command to Manage UEFI Boot Menu]]
  *[[https://www.linuxjournal.com/content/take-control-your-pc-uefi-secure-boot|Take Control of Your PC with UEFI Secure Boot]]
  *[[https://linuxconfig.org/how-to-manage-efi-boot-manager-entries-on-linux|How to manage EFI boot manager entries on Linux]]
=====GRUB=====


=====Ventoy=====
<fs large>What is ventoy</fs>\\
[[https://www.ventoy.net/en/index.html|Ventoy]] is an open source tool to create bootable USB drive for ISO/WIM/IMG/VHD(x)/EFI files.
  *With ventoy, you don't need to format the disk over and over, you just need to copy the ISO/WIM/IMG/VHD(x)/EFI files to the USB drive and boot them directly.
  *You can copy many files at a time and ventoy will give you a boot menu to select them (screenshot).
  *x86 Legacy BIOS, IA32 UEFI, x86_64 UEFI, ARM64 UEFI and MIPS64EL UEFI are supported in the same way.
  *Most type of OS supported (Windows/WinPE/Linux/ChromeOS/Unix/VMware/Xen...) 
//**This can be loaded on to a USB disk instead of a flash drive for a potential better overall experience.**//

{{tag>boot ventoy grub "boot menu" tech notes technical uefi efi efibootmgr "grub-efi"}}

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