"Xu, Yanfei" <yanfei...@windriver.com> writes: > Hi experts, > > How can I disable the floppy controller drive when I boot a VM by qemu- > system-x86_64? I did not specify any arguments about floppy, but after > the qemu boots up, linux always can detect floppy drive and then > modprobe the matched floppy.ko. > > qemu version: v5.2 > > command line: > > qemu-system-x86_64 -device virtio-net- > pci,netdev=net0,mac=52:54:00:12:34:02 -netdev > tap,id=net0,ifname=tap0,script=no,downscript=no -object rng- > random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0 > -drive file=/path/to/images/qemux86-64 > /qemux86-64.ext4,if=virtio,format=raw -usb -device usb-tablet -cpu > core2duo -enable-kvm -m 512 -pidfile /path/to/pidfile_4167420 -m 512 > -snapshot -serial mon:vc -serial null -kernel /path/to/qemux86-64 > /bzImage.bin -append 'root=/dev/vda rw mem=512M > ip=192.168.7.2::192.168.7.1:255.255.255.0 oprofile.timer=1 > printk.time=1' > > As I konw BIOS can control the switch of floppy controller on a real > hardware, But how can I do it on qemu? And does the qemu enable that by > default?
Machine types pc-i440fx-* provide a floppy controller. An empty floppy drive is connected by default. Use -nodefaults to suppress it. Machine types pc-q35-* provide a floppy controller only when you ask for it, e.g. with -drive if=floppy. Use -M to select the machine type.
