A command-line method to make a live USB for UEFI systems

Please note: this deletes all data on the target device.

Install prerequisite:

sudo apt-get install p7zip-full

Assuming the target USB is at /dev/sdb

(please check first with lsblk or gnome-disks or sudo fdisk -l and be sure you know what you are formatting)

Make sure the device has no mounted filesystem and unmount it if necessary, for example:

udisksctl unmount -b /dev/sdb1

Destroy existing partition table:

sudo sgdisk --zap-all /dev/sdb

Create new GPT:

sudo sgdisk --new=1:0:0 --typecode=1:ef00 /dev/sdb

Format as FAT32:

sudo mkfs.vfat -F32 /dev/sdb1

Check it:

sudo fdisk -l /dev/sdb

Should output something like:

Device     Start      End  Sectors  Size Type
/dev/sdb1   2048 15663070 15661023  7.5G EFI System

Mount the drive and extract iso onto it, replacing 'name-of-iso' with the actual filename of the iso you downloaded earlier

sudo mount -t vfat /dev/sdb1 /mnt
sudo 7z x name-of-iso -o/mnt/

Unmount

sudo umount /mnt

Now reboot & enjoy Ubuntu ^_^

zerodevelopers