Flash ISO image to USB Drive or SD Card with dd command on Linux

• 1 lsblk
  
• 2 Verify name of the device:
  parted /dev/{sd|mmcblk}{LETTER} print | head -1 | sed 's/Model: //'
  
• 3 dd if=/path/to/image.iso of=/dev/{sd|mmcblk}{LETTER} bs=4M conv=fsync oflag=direct iflag=fullblock status=progress && sync
  
• N WARNING: Backup your data, potential data loss! Ensure you are writing to the correct device at /dev/{sd|mmcblk}{LETTER}. It will be overwritten with ISO contents.
  

References

• https://linux.die.net/man/1/dd
• https://unix.stackexchange.com/questions/312687/why-is-sync-so-important-when-making-a-bootable-linux-usb-stick