A big thanks to you both again. It makes a lot more sense now.
Originally the C drive was only a 120GB SSD, due to budget and availability at the time.
That was not enough space for all the subsequent game data.
I didn't realize at the time that the program could be split with all the big scenery data being installed onto a separate drive.
The 1394 card issue still has not been fixed, but the camera did have an accessory base attachment with S-Video output.
I was able to export with this USB converter device which also has a basic editing software.
https://www.walmart.com/ip/Adesso-Video-Capture-Express/23145700?wmlspartner=wmtlabs&adid=22222222222017232768&wmlspartner=wmtlabs&wl0=e&wl1=o&wl2=c&wl3=10361658493&wl4=pla-1105783594662&wl12=23145700_0&wl14=adesso%20video%20capture&veh=sem&msclkid=8e4ad76ea4bd1c30156f8d89d0ab4a9b
(It did require a restart to function, and was keen on phoning home by default just like everything else today)
Video is being captured as we speak, hopefully.
Thx again.