Using the Terminal
It is really simple. Go to a Terminal and type:
sudo dd if=~/Desktop/linuxmint.iso of=/dev/sdx oflag=direct bs=1048576
Where ‘~/Desktop/linuxmint.iso’ is the name and location of your downloaded image (located at the desktop in this example) and ‘/dev/sdx’ is the target USB drive. If your system doesn’t support ‘oflag=direct’, you can just leave it out as it is simply intended to speed up the process a bit.
If you don’t know about the target USB drive path, run this command and figure out your destination drive.
sudo fdisk -l
Warning: Make sure to set the correct device path, as this process will delete all data that was on the specified device previously!
Remember, don’t include an integer for the USB drive, e.g. ‘/dev/sdx1’, as it would refer to the existing partition on that drive and not the drive itself.
When the USB has been properly created by ‘dd’, there should be an output similar to this:
sudo dd if=~/Desktop/linuxmint.iso of=/dev/sdb oflag=direct bs=1048576 706+1 records in 706+1 records out 740601856 bytes (741 MB) copied, 91.7024 s, 8.1 MB/s
To install imageWriter, open a Terminal and run this command:
apt install usb-imagewriter
Launch imageWriter from the menu, select your ISO image and your USB device and press “Write to device”.
Note: Some early versions of imageWriter only accept .img files. If the tool won’t accept .iso files, simply rename the ISO file from .iso to .img.