Linux – How to make a bootable USB flash drive that can run memtest

Although I did not do it myself, I would try recommend the following:

• Get yourself a USB stick (16G or more) with the base Ubuntu, and set it up with the appropriate partition. If you're using the default Ubuntu disk partitioning (everything under /), that should be easy.

• Copy all files form all directories to the UST stick

• run grub-install on the new device, such as /dev/sdb1:

  cd /boot/grub grub-install /dev/sdb

You should be able to boot from your new USB stick.

I've had succes with both Windows and Linux iso's using UNetBootin. There are also several tutorials out there on how to use it with a Windows ISO.