Virtual disk, vhdx, vhd - is it nothing but a dd dump?

David Christensen dpchrist at
Sun Sep 20 08:20:50 UTC 2020

On 2020-09-20 00:54, Christoph Kukulies wrote:
> Sorry for being a bit off topic, but since it refers virtualization an FreeBSD has VirtualBox, I’m wondering,
> whether a so called vhd or vhdx file, which can be produced with virtualization tools like  disk2vhd, might be nothing but a raw dump
> of the disk.
> Reason behind: I would like to virtualize an HP notebook (an HP11-e-170eg). Several trials failed (Parallels cloning over network,
> Hyper-V, p2v Vcenter Converter).
> Now I thought of at least securing the hard drive once using
> dd if=/dev/sd0 of=dump
> from a booted FreeBSD stick to an external USB3.0 large disk.
> Question, whether the dump obtaind that way, can be used as a virtualization medium.
>> Christoph


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