Copy the entire contents of the mounted drive to a local folder.
Since a direct converter doesn't exist, you must use Acronis’s own ecosystem. To get an ISO, you effectively need to perform a : convert tibx to iso exclusive
Short for ISO 9660, this is an uncompressed archive format used for optical discs. It is the "universal language" of bootable media and virtual machine drives. Copy the entire contents of the mounted drive
Most online guides give you the wrong advice: convert tibx to iso exclusive
mkisofs -o output.iso -J -R -l -v -V "MY_VOLUME" /mnt/mounted_tibx/
Users of Acronis Cyber Protect Home Office or ATI 2021 can use the "Convert to Virtual Disk" tool to transform a .tibx file into a .vhdx file.