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authorChristian Krinitsin <mail@krinitsin.com>2025-06-30 12:24:58 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-30 12:27:06 +0000
commit33606b41d35115f887ea688b1a16f2ff85bf2fe4 (patch)
tree406b2c7b19a087ba437c68f3dbf0b589fa1d6150 /results/scraper/launchpad-without-comments/1923663
parentadedf8771bc4de3113041ca21bd4d0d1c0014b6a (diff)
downloadqemu-analysis-33606b41d35115f887ea688b1a16f2ff85bf2fe4.tar.gz
qemu-analysis-33606b41d35115f887ea688b1a16f2ff85bf2fe4.zip
add launchpad bug reports without comments
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+Can't(?) disable default floppy drive any more in qemu 6.0
+
+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.
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