Or it could be my 1.44MB/720kb USB 3.5" floppy drive. I managed to maybe partially image the 3.5" startup disk, then the drive simply stopped seeing any disks after that -- everything was "disk is not formatted, do you want to format it now?"
I know there's a problem with the drive; because I put a expendable 1.44MB floppy into it and it would not read it; but it read in my other 1.44MB USB floppy, which cost me only $20, but could only read 1.44MB disks.
I then dropped the working 1.44MB only drive onto the floor, breaking the case.
Blegh. I think I'll just go to the local thrift store tomorrow after work and get a old computer with a 3.5" drive and cannibalize that into one of my machines and see if THAT works...
(PS; I really don't care if I can't get this exact disk submission of KQV; all I care about is getting a working KQV EGA install -- I'm on a mission to track down all the Sierra SCI0 EGA releases as I played SQ4 on a Tandy 1000! So far I've already got a working set of SQ1 Remake EGA disks; as THAT ebay shipper actually remembered my instructions to mark it as Magnetic Media).