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I have an image file (linux based image) and want to convert it to VHD so that it can be used to create hyper-V VMs.

I used "qemu-img convert" to convert raw to vpc format, but vpc doesnt work for hyper-V and vhd is not supported by "qemu-img convert".

What would be the right way to do this?

The image only has one partition:

Partition Table: msdos

Number  Start   End     Size    Type     File system  Flags
 1      32.8kB  4295MB  4295MB  primary  ext3         boot
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up vote 6 down vote accepted

VhdTool should be able to do the conversion.

vhdtool.exe /convert myimage.raw
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Thanks that worked. However the command doesnt create a new vhd, but appends a footer at the end of the existing image file. I just have to rename the file to .vhd so that it is recognized by the hyper-v vm creation wizard. – user1060517 Jul 24 '12 at 20:52
Also, vhdtool.exe has a prerequisite of windows server OS/NTFS. I was wondering if there is any similar tool (raw to vhd) that can be used on a linux machine? – user1060517 Jul 24 '12 at 20:54
I'm not aware of one. But since the destination hypervisor is Hyper-V, this shouldn't be much of a problem. :) – Michael Hampton Jul 24 '12 at 20:57
yes certainly. Thanks again. – user1060517 Jul 24 '12 at 21:04
@apple16 Yep, it's dead. Microsoft yanked it for some reason. Though copies can still be found with a careful web search, I think it best not to link to any such URLs as they may also change over time, and this one can also be fed to the Wayback Machine if necessary. – Michael Hampton Jun 11 '14 at 1:35

As indicated above by apple16 there is a quite similar question here that circumvents the problem that VhdTool seems not available anymore. Virtualbox comes with a tool called "VBoxManage" which works just perfect. Provided you've got a plain image file of your disk using e.g. dd, you can do this:

VBoxManage convertfromraw myfile.dd myfile.vhd --format VHD

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I'm not sure for how long this has been the case, but since this is the #1 search result for this question, I'll answer it currently. VHD is currently supported by qemu-img. The argument for VHD is vpc. This was found here

In case link breaks, here's a copy/past

Converting images from one format to another is generally straightforward. qemu-img convert: raw, qcow2, VDI, VMDK

The qemu-img convert command can do conversion between multiple formats, including raw, qcow2, VDI (VirtualBox), VMDK (VMWare) and VHD (Hyper-V). Table 7.1. qemu-img format strings

**Image format**    **Argument to qemu-img**
raw                     raw
qcow2                   qcow2
VDI (VirtualBox)        vdi
VMDK (VMWare)           vmdk
VHD (Hyper-V)           vpc

This example will convert a raw image file named centos63.dsk to a qcow2 image file.

$ qemu-img convert -f raw -O qcow2 centos64.dsk centos64.qcow2

To convert from vmdk to raw, you would do:

$ qemu-img convert -f vmdk -O raw centos64.vmdk centos64.img


The -f format flag is optional. If omitted, qemu-img will try to infer the image format.

VBoxManage: VDI (VirtualBox) to raw

If you've created a VDI image using VirtualBox, you can convert it to raw format using the VBoxManage command-line tool that ships with VirtualBox. On Mac OS X, VirtualBox stores images by default in the ~/VirtualBox VMs/ directory. The following example creates a raw image in the current directory from a VirtualBox VDI image.

$ VBoxManage clonehd ~/VirtualBox\ VMs/fedora18.vdi fedora18.img --format raw

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if anyone is still interested of converting raw disk image to vhd, use the following command:

qemu>qemu-img.exe convert e:\src.img -O vpc -o subformat=dynamic f:\dst.vhd

Don't forget to change presented filenames to your ones.

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