Can't start Windows 11 VM


Renowned Member
Nov 18, 2011
ona proxmox pve-manager/7.4-3/9002ab8a (running kernel: 5.15.102-1-pve),
i cant start Windows 11 VM:

swtpm_setup: Not overwriting existing state file.
kvm: -device ide-cd,bus=ide.0,unit=1,drive=drive-ide1,id=ide1,bootindex=103: Can't create IDE unit 1, bus supports only 1 units
stopping swtpm instance (pid 557321) due to QEMU startup error
TASK ERROR: start failed: QEMU exited with code 1
The Vm has a standard config file:
bios: ovmf
boot: order=ide0;ide2;net0;ide1
cores: 4
efidisk0: KVM:vm-188-disk-0,efitype=4m,pre-enrolled-keys=1,size=1M
ide0: KVM:vm-188-disk-1,cache=writeback,size=32G,ssd=1
ide1: local:iso/virtio-win-0.1.240.iso,media=cdrom,size=612812K
ide2: local:iso/Win11_English_x64.iso,media=cdrom,size=5369126K
machine: pc-q35-7.2
memory: 8192
meta: creation-qemu=7.2.0,ctime=1698745831
name: Test
net0: virtio=86:85:73:00:6D:5A,bridge=vmbr0,firewall=1
numa: 0
ostype: win11
scsihw: virtio-scsi-pci
smbios1: uuid=d071c97b-6802-499d-a6f2-d5acf73fb288
sockets: 1
tpmstate0: KVM:vm-188-disk-2,size=4M,version=v2.0
vmgenid: 3339b2b4-2a7e-4c55-a41a-c87e27c99a48

Some ideas ?
With machine type q35 you can only have one IDE device per channel, so two IDE devices max in total. Connect the harddisk of the VM as "scsi" and use the virtio drivers ISO to install the virtio scsi driver during Windows install.
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@fiona , just to be sure, what is specifically patched? With this patch Q35 will support more than 2 IDE devices or it will not allow to add more than 2 IDE devices to a Q35 VM?
It allows adding up to 4 IDE devices, because now, each device is added as unit=0 on a dedicated bus. Before, ide1 and ide3 would tried to be added as unit=1 of the bus, which works for i440fx, but q35 doesn't support.
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