You can run Acronis True Image 2018 from a bootable media on a bare-metal system or a crashed computer that cannot boot. You can even back up disks on a non-Windows computer, copying all its data into the backup by imaging the disk in the sector-by-sector mode. To do so, you need bootable media that has a copy of the standalone Acronis True Image 2018 version installed on it.
How you can obtain bootable media:
Note: The data it may contain will not be modified.
When the file is downloaded, burn it onto a CD or DVD.