Depends on the boot mode for the machine you want to boot with the USB flash drive, choose one of the following methods to setup Clonezilla Live on your USB flash drive using GNU/Linux:
This USB bootable software is a free and open source all in one disk cloning, disk imaging, and backup solution. It is designed to help users create and deploy exact copies, or clones, of entire hard drives, partitions, or individual files.
Let's learn how to create Clonezilla USB with Rufus. This post will provide step-by-step instructions that will help you streamline the process of securing and managing your data.
This article shows you in detail how to create Clonezilla USB with Rufus, and shows you an easier way to create bootable USB and do disk clone by third-party software.