You could create a bootable USB flash drive (formatted in FAT32) to boot a computer without an operating system, allowing you to back up or restore disks.
Use one USB stick to clone drives or back up multiple different computers. Step-by-Step: Creating Your Portable Rescue Drive Acronis True Image 2013 on a computer where it is already installed. Navigate to "Tools" and select "Rescue Media Builder" Choose Your Media: Select a USB flash drive (formatted in FAT32) or a CD/DVD. Select Components: Acronis True Image 2013 " is checked. For advanced users, adding WinPE support acronis true image 2013 portable
Click "Proceed" to write the bootable environment to your drive. How to Use Your Portable Drive You could create a bootable USB flash drive
Some archived copies of the official Acronis True Image 2013 bootable ISO exist on legitimate download mirrors (e.g., MajorGeeks, Softpedia – archives section). This ISO is technically portable because you can write it to a USB using and boot. Navigate to "Tools" and select "Rescue Media Builder"