empty qcow2

[a]

I plugged multiple qcow2 to a Windows guest. On the Windows disk manager all disks are listed perfectly, with their data, their real space, I even can explore all files on the Explorer, all cool

On third party disk manager (all of them), I only have the C:\ HDD who act normally, all the other plugged qcow2 are seen as fully unallocated, so I can't manipulate them

I want to move some partitions, create others, but on Windows disk manager I can't extend or create partition and on third party I didn't see the partitions at all

Even guestfs doesn't recognize any partition table `libguestfs: error: inspect_os: /dev/sda: not a partitioned device`

[John Snow (jnsnow)]

It sounds like maybe these disks have been partitioned in a format that only Windows understands. Can you tell me what the windows disk manager claims the partition table format to be?

If you still think that maybe there's a QEMU bug, please give more details:

- host kernel version

- qemu version

- qemu command line

- how were these qcow2 files created?

- What version of qcow2 file does `qemu-img info` say they are?

- What version of windows? (10?)

- Can you name one of the third party disk managers so we can try to reproduce it?

[a (sxtf)]

WDM claims it to be a MBR

Linux 5.6.14

QEMU 5.0.0-6

`nobody 19023 109 21.1 7151512 3462300 ? Sl 13:18 0:32 /usr/bin/qemu-system-x86_64 -name guest=win10machine,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-4-win10machine/master-key.aes -machine pc-q35-4.2,accel=kvm,usb=off,vmport=off,dump-guest-core=off -cpu Haswell-noTSX,vme=on,ss=on,vmx=on,f16c=on,rdrand=on,hypervisor=on,arat=on,tsc-adjust=on,umip=on,arch-capabilities=on,xsaveopt=on,pdpe1gb=on,abm=on,skip-l1dfl-vmentry=on,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff -m 4096 -overcommit mem-lock=off -smp 2,sockets=2,cores=1,threads=1 -uuid db88f5fc-47f0-439c-9192-a5991df2d8f8 -no-user-config -nodefaults -chardev socket,id=charmonitor,fd=34,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,driftfix=slew -global kvm-pit.lost_tick_policy=delay -no-hpet -no-shutdown -global ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1 -boot strict=on -device pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2 -device pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1 -device pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2 -device pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 -device pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4 -device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.2,addr=0x0 -device virtio-serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 -blockdev {"driver":"file","filename":"/home/user/nvme0n1/p1/win10.qcow2","node-name":"libvirt-3-storage","auto-read-only":true,"discard":"unmap"} -blockdev {"node-name":"libvirt-3-format","read-only":false,"driver":"qcow2","file":"libvirt-3-storage","backing":null} -device ide-hd,bus=ide.0,drive=libvirt-3-format,id=sata0-0-0,bootindex=1 -blockdev {"driver":"file","filename":"/home/user/nvme0n1/p1/dump1.qcow2","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"} -blockdev {"node-name":"libvirt-2-format","read-only":false,"driver":"qcow2","file":"libvirt-2-storage","backing":null} -device ide-hd,bus=ide.1,drive=libvirt-2-format,id=sata0-0-1 -blockdev {"driver":"file","filename":"/home/user/nvme0n1/p1/dump2.qcow2","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"} -blockdev {"node-name":"libvirt-1-format","read-only":false,"driver":"qcow2","file":"libvirt-1-storage","backing":null} -device ide-hd,bus=ide.2,drive=libvirt-1-format,id=sata0-0-2 -netdev tap,fd=36,id=hostnet0 -device e1000e,netdev=hostnet0,id=net0,mac=52:54:00:b5:3a:ca,bus=pci.1,addr=0x0 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0,bus=usb.0,port=1 -spice port=5900,addr=127.0.0.1,disable-ticketing,image-compression=off,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1 -device ich9-intel-hda,id=sound0,bus=pcie.0,addr=0x1b -device hda-duplex,id=sound0-codec0,bus=so...

[Launchpad Janitor (janitor)]

[Expired for QEMU because there has been no activity for 60 days.]