Bootable USB with tibx file

Hi there,
I'm using Acronis True Image 2021.
My goal: I would like to create a bootable USB pendrive and to copy the tibx file (that contains my Windows 10 C: partition). So in case the PC fails to boot/read from the internal HDD, I could boot from the external USB pendrive and recover the whole system from the tibx file that is on the same pendrive. This would be my preferred method, so I could travel with a single USB dongle that fits in any pocket, instead of carrying an external HDD drive.
My problem: the USB pendrive needs to be formatted in FAT32. The tibx file can't be stored there as its size exceeds the 4GB limit.
My questions:
a) I could backup my C: system directly on the USB pendrive. But in that case, Acronis would split up the file into 4GB-files, correct?
b) Is there any other solution to backup/copy the tibx file to the pendrive without splitting it? Like, for example, creating 2 partitions of the USB pendrive: using one partition as boot drive (FAT32) and the second partition to copy the tibx file (NTFS)?
Thanks for any hint.


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