Convert HDD to VMDK

Hdd to vmdk file conversion

HDD to VMDK conversion means turning a virtual disk image into a VMware-compatible .vmdk file. The exact steps depend on the real source format, because .hdd is not the most common VirtualBox disk extension and may be used by different products.

In many cases, the source disk is actually .vdi, .vmdk, .vhd, or another virtual disk type. Before converting, verify what created the file and whether it is a fixed or dynamic disk image.

VMware vCenter Converter Standalone was once the standard tool for this job, but it is now discontinued. It may still work in some environments, but it is no longer maintained and should not be treated as the primary modern option.

A more current method is to use tools that can read the source image and write a VMware disk format. Two common choices are qemu-img and VirtualBox utilities.

Example with qemu-img converting a VirtualBox disk image to VMDK:

qemu-img convert -f vdi -O vmdk source.vdi destination.vmdk

If you are using VirtualBox, you can also convert disks with VBoxManage. For example:

VBoxManage clonemedium disk source.vdi destination.vmdk --format VMDK

If the source file is truly .hdd, first confirm that VirtualBox or another tool recognizes it as a supported disk image. If it is not directly supported, you may need to convert it to an intermediate format first, then export to .vmdk.

After conversion, attach the resulting .vmdk file to a VMware virtual machine and test booting. If the guest does not start, check the storage controller type, boot mode, and whether VMware Tools or guest drivers need to be installed.

Tip: If you only need to move a VM between platforms, exporting and importing the whole virtual machine may be easier than converting the disk alone.