[Bug 1923663] Re: Can't(?) disable default floppy drive any more in qemu 6.0

[Thomas Huth]

This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:

 https://gitlab.com/qemu-project/qemu/-/issues/322


** Changed in: qemu
       Status: New => Expired

** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #322
   https://gitlab.com/qemu-project/qemu/-/issues/322

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1923663

Title:
  Can't(?) disable default floppy drive any more in qemu 6.0

Status in QEMU:
  Expired

Bug description:
  There's a documented change in qemu 6.0:

  https://qemu-project.gitlab.io/qemu/system/removed-features.html
  #floppy-controllers-drive-properties-removed-in-6-0

  where you can't configure floppy controller device properties with
  -global any more. However, there's a thing you could do with the old
  parameter which I can't figure out a way to do with the documented
  replacement. openQA passed exactly this argument:

  -global isa-fdc.driveA=

  and that has the effect of removing/disabling the default floppy
  drive/controller. If you just run `qemu-system-i686` (no other args)
  you'll see the VM briefly try to boot from a floppy drive; if you run
  `qemu-system-i686 -global isa-fdc.driveA=` (with an earlier version of
  qemu, obviously) you'll see it does not do so.

  I can't see a way to do this with `-device floppy`. Going by the docs,
  the equivalent should be:

  -device floppy,unit=0,drive=

  but that does not seem to have the same effect. If you run `qemu-
  system-i686 -device floppy,unit=0,drive=`, it still tries to boot from
  a floppy drive.

  I see there's a -nodefaults option that disables *all* default
  devices, but I don't think that's what we want here either. We might
  want the other default devices, we just don't want the floppy drive.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1923663/+subscriptions