Did you test different Controller ? Cable ?

Forgot to mention that I got the floppy to work with a system on C:
I could use the floppy normally and it was fine, just can't boot from it. My first cable was indeed dead, but I got that fixed.
Would a faulty controller make it possible to fully use a drive but not boot from it?

Do you get any error messages? Does the drive light come on?

Here are things to check:
Is the Bios set up properly ( Correct drive type / Boot Order)
Are you using a 486 with WB cache on a system that doesn't really support it?
Is the boot sector on the disk damaged?
Does the disk have undamaged boot files?

Hi. Has this been solved? Same issue here. Different Floppies Formated with /s but when booting system hangs without any message before even reaching the text: starting msdos…

Could there be an issue with my dual boot with win95? When I boot into previous msdos version and then try sys a: dos states: no OS on this drive. Strange. With format /s I won’t get any error. But maybe it is just suppressing the message. Is this a known issue that sys won’t work with dual boot win95 (via boot previous ms dos option)?

FDD is otherwise working flawless

Remark: all tested with an 720k disk

Problem identified. Creating a boot disk via win95 boot is no problem. Even at command line via sys.
The msdos sys seems to be confused with the dual boot there for the sys won’t work anymore for me. Using now the original msdos install boot disk.
BR

Well, that floppy's contents would have been interesting.
Basically you need a boot sector containing code to load IO.SYS or then contents starting at the right sector. (FORMAT.COM)
You can copy the following files manually in the specific order on an empty disk when you take care about the file attributes.
Next is to copy IO.SYS followed by MSDOS.SYS
It is now an option to add DRVSPACE.BIN
Then you need COMMAND.COM too

With your double boot configuration I'm not sure which files were copied by your format /s command. Perhaps a bastard mixture 😉

All is there on the disk but no boot. I don’t know why but creating a boot floppy using sys Oder format /a under msdos 6.22 using win95 dual boot won’t work (for me) as lessons learned.
I think I also know why:

When you select from win95 boot menu „start previous Ms dos version“ it is using the msdos versions of msdos.sys and iO but only for the second of boot. It then automatically readdresses the win95 msdos.sys and iO.sys since the system needs them automatically after the next reboot. Quite sure that’s it