Create bootable pendrive of Ubuntu installer under Linux

In this article, we would like to show how to create bootable pendrive of Ubuntu installer under Linux.

Simple steps:

1. prepare a pendrive with a capacity of at least 8 GB,
    
2. download Ubuntu installer as *.iso file,
   Official Ubuntu web site: https://ubuntu.com/download/desktop
   Example downloaded file name: kubuntu-24.04.1-desktop-amd64.iso
    
3. insert pendrive into any USB socket in your computer,
    
4. find pendrive device name,
   You can use lsblk command, e.g.

   john@home-pc:~$ lsblk
   
   NAME                 MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
   sda                    8:0    0   3,6T  0 disk  
   └─sda1                 8:1    0   3,6T  0 part  
   sdb                    8:16   1   7,5G  0 disk  
   └─sdb1                 8:17   1   7,5G  0 part  
   nvme0n1              259:0    0 931,5G  0 disk  
   ├─nvme0n1p1          259:1    0   512M  0 part  /boot/efi
   ├─nvme0n1p2          259:2    0     2G  0 part  /boot
   └─nvme0n1p3          259:3    0   929G  0 part  
     └─encrypted        252:0    0   929G  0 crypt 
       ├─encrypted-SWAP 252:1    0     8G  0 lvm   
       ├─encrypted-ROOT 252:2    0    64G  0 lvm   /
       └─encrypted-HOME 252:3    0   857G  0 lvm   /home

   Where: sdb is the name of the connected 8GB pendrive.
    
   Note: you can run lsblk command before and after pendrive is inserted to see what name has appeard pendrive device.
    

5. copy *.iso file content to pendrive,
   You can use dd command, e.g.

   sudo dd if=kubuntu-24.04.1-desktop-amd64.iso of=/dev/sdb

   Where:
   • if= indicates path to downloaded *.iso file,
   • of= indicates path to pendrive device,
    
   Note: dd command execution may take few minutes.
   Warning: be sure if you choose right of= path!
    
6. done
   Optionally you can run sync command after all to be sure if all data was written out, and take out the pendrive from the USB socket.