@Templario
Hi,
Honestly not if it is possible to do it I do not use qemu to do many things.
I guess you can mount real partitions but I've never tried.

a simple way is to use a usb data stick like this with qemu:

-usb -device usb-host,vendorid=0xeba4,productid=0x7588

I don't use qemu with windows
"usb deview" for windows should give you the right IDs

download link usbdeview x64

https://www.nirsoft.net/utils/usbdeview-x64.zip

this is a quick solution move your files to the stick and then mount it with qemu.