can you post a link of the download?
most likely the installer checks the floppy volume label and that's why it fails

edit:
found them weird they seem to be coming from the gravis ftp...
http://www.gravisultrasound.com/installdisks.htm
have you tried the label GUS411B label for diks 2?

I guess you need to name the floppy disks like the individual .zip files, that is "gus411a" to "gus411f".

try this: extract all ZIPs to a directory and run the installer from there , like this:

derSammler wrote on 2020-01-24, 18:32:

I guess you need to name the floppy disks like the individual .zip files, that is "gus411a" to "gus411f".

Oooohhh.. that didn't occur to me at all. I was thinking they probably needed to be labeled, but trying to guess would be a shot in the dark. (I tried snooping in the install.exe file with a hex editor, but I think it's compressed -- just binary data for days.) Naming the ZIP files accordingly would be sensible though. I'll give that a try tonight!

If that doesn't work, I'll try copying all their contents to a temp folder and installing from there, but I really want to get it working from disks. 😀

Thanks guys!

Follow-up: Labeling the disk per the ZIP filenames did not help. I was able to complete the install by copying the files into a temp directory and installing from there. Still would like to know what's holding the installer back from using the disks though. Anyone have original media?

I have version 4.10 diskettes, and volume labels are from ULTRASND_1 to ULTRASND_6

Just wanted to follow up: Those labels did the trick. The installer worked fine from floppies when I labeled the disks ULTRASND_x. Thank you!!