[cctalk] Getting QRST files onto a floppy (sigh)

So I'm working on restoring a Compaq DeskPro/XE system to allow me to use the 5.25 floppy to copy files from my 3.5 floppies which will come from my Windows 10 system so that I can extract on the Deskpro/XE using teledisk the .td0 files that make up a RX50 floppy disk set so I can load POS 3.2 on my Pro/380 and see if the DECNA card works. What a pain in the rear. So far the XE boots but has no setup. Setup requires a special floppy (Diagnostic disk) which mine was bad after 30 years so I'm trying to create a new one. I have the official Compaq disk creation thing for a floppy but it's in QRST format and the QRST under DOSBOX on Windows10 can't properly access a floppy even if "mounted" with a -t floppy extension. Before I drag out my rusty and trusty Windows 95 Toshiba 660AV laptop, is there another way to get this onto a floppy? I have an endless supply of Rpi's, and doing a DD from a .img file works fine but this of course is a QRST file. Thoughts? CZ