*** This bug is a duplicate of bug 1776920 *** https://bugs.launchpad.net/bugs/1776920
** This bug has been marked a duplicate of bug 1776920 qemu-img convert on Mac OSX creates corrupt images -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1738840 Title: qemu-img convert qcow2 to raw fails on OS X Status in QEMU: New Bug description: I try to convert a image from qcow2 to raw and the result is a not bootable image. I dont know if it is a bug in qemu-img convert or with the image it self. See this error report for better readability: https://github.com/coreos/bugs/issues/1121#issuecomment-351968518 As a reply here they use 2.9.0 version of $ qemu-img -V qemu-img version 2.11.0 Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers $ uname -v Darwin Kernel Version 17.2.0 $ mount ./ /dev/disk1s1 on / (apfs, local, journaled) $ wget https://beta.release.core- os.net/amd64-usr/current/coreos_production_openstack_image.img.bz2 $ date Fri Dec 14 17:15:57 CET 2017 $ bunzip2 coreos_production_openstack_image.img.bz2 $ cp -a coreos_production_openstack_image.img.org coreos_production_openstack_image.img $ shasum coreos_production_openstack_image.img.org ae2119c6f0390dc36f247f7016923ea85de5d8e6 coreos_production_openstack_image.img.org $ qemu-img convert -f qcow2 -O raw coreos_production_openstack_image.img.org coreos_production_openstack_image.bin $ qemu-system-x86_64 -m 256 -nographic -hda coreos_production_openstack_image.img -boot c SeaBIOS (version rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org) iPXE (http://ipxe.org) 00:03.0 C980 PCI2.10 PnP PMM+0FF915A0+0FEF15A0 C980 Booting from Hard Disk... GRUB loading.... Welcome to GRUB! .... $ qemu-system-x86_64 -m 256 -nographic -hda coreos_production_openstack_image.bin -boot c SeaBIOS (version rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org) iPXE (http://ipxe.org) 00:03.0 C980 PCI2.10 PnP PMM+0FF915A0+0FEF15A0 C980 Booting from Hard Disk... Boot failed: not a bootable disk .... $ head -c 8192 coreos_production_openstack_image.bin | hexdump -C 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00002000 $ qemu-img info coreos_production_openstack_image.bin image: coreos_production_openstack_image.bin file format: raw virtual size: 8.5G (9116319744 bytes) disk size: 217M $ qemu-img info coreos_production_openstack_image.img image: coreos_production_openstack_image.img file format: qcow2 virtual size: 8.5G (9116319744 bytes) disk size: 785M cluster_size: 65536 Format specific information: compat: 0.10 refcount bits: 16 The same version works on Ubuntu so it looks like its only the Mac version or the new APFS filesystem. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1738840/+subscriptions