Repo Man11 wrote on 2026-07-02, 18:41:
Ozzuneoj wrote on 2026-07-02, 04:21:Weird. I've never had a problem using USB floppy drives on modern Windows systems. […]
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Repo Man11 wrote on 2026-07-02, 04:07:
When I bought a USB floppy drive at a thrift store a few years ago, I was pleasantly surprised that it worked with no issue with my Win10 computer. I could open and edit files on floppy disks, make BIOS update disks, driver disks, etc. But I recently plugged it in to my main computer (first time in probably a year, maybe less) and it will no longer open a floppy disk (it appears in This PC but gives an error when you try to open a disk). I tested it in a WinXP machine, the drive still works fine, this a Win10 issue.
myne wrote on 2026-07-02, 04:09:
IIRC the driver was removed - probably around the same time as AGP ~16h2
Weird. I've never had a problem using USB floppy drives on modern Windows systems.
I regularly use USB floppy drives on my Windows 10 22H2 system to read 1.44MB and 720K disks and I have never had a problem that wasn't related to the drive itself going bad.
I even just tested a USB floppy on the sole Windows 11 system in my house and it works perfectly in Windows 11 24H2. This is only ever used as a Minecraft server and I am 100% sure this system has never had a floppy drive connected to it previously, so it isn't a matter of me having set something up already.
EDIT: Photo for proof.
The attachment 20260702_002321.jpg is no longer available
Not being aware that this was suddenly an issue my first clue was plugging my USB floppy in with a disk loaded and running Install.bat for Memtest86 1.70 and I was greeted with "Unsupported application." Then I tried opening the drive itself.
I'm not too worried about fixing it, my plan is to install a new drive and move to Win11 fairly soon, but it was annoying all the same.
The unsupported application message says that rawrite.exe is a 16bit DOS application so it cannot run under 64bit Windows, like it says. The memtest floppy installer you're using is from 2007 (I found it in your post here). It uses a 16bit DOS rawrite application from 1999 to write the memtest image to a floppy disk. It cannot work in Windows x64 without using something like DOSBox. It hasn't even gotten to the point of being able to access the drive when this message pops up.
Have you tried just inserting different floppies with different contents on them to see if they will read?
Whenever I see that message it is usually because the drive or disk is dirty or defective. You said the drive works on another system, so it is certainly possible that something else is going on, but I'd make sure that your disks are readable first. Either way, it isn't intended behavior for Windows 10 or 11.
It's possible that the floppy driver has been broken and needs repaired, the registry has had some kind of issue that prevents floppies from working or there is some third party software\antivirus getting in the way. Also, try different USB ports (2.0, 3.0, 3.1, etc.), just in case there is something going on there.
Now for some blitting from the back buffer.