DOS ain't dead - Detecting floppy disk drives

Detecting floppy disk drives (Developers)

posted by rr , Berlin, Germany, 26.05.2009, 22:45

What methods are available to detect if (or what type of) floppy disk drives are present on a DOS system?

I found the following:
MEM 0040h:0010h
INT 11h
CMOS 10h

There seem to be more, because all these functions already return "none", but MSD.EXE and file managers (tested VC and FAR) running on MS-DOS 6.22 in QEMU 0.10.5 still report a FDDs A: and B: (40 cylinders, 2 heads, 9 sectors in MSD), although no floppy images were mounted.

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Complete thread:

Detecting floppy disk drives - rr, 26.05.2009, 22:45 (Developers)
- Detecting floppy disk drives - Rugxulo, 27.05.2009, 00:51
  - Detecting floppy disk drives - Rugxulo, 27.05.2009, 02:46
  - Detecting floppy disk drives - rr, 28.05.2009, 22:00
    - Detecting floppy disk drives - nidud, 07.06.2009, 20:57
- Detecting floppy disk drives - Japheth, 27.05.2009, 07:17