No progress indicator when creating fixed size VHD images

[Rich Miller]

When creating a fixed size VHD drive image, the progress bar stays at 0% until it is completed. Creating fixed VDI and VMDK images do correctly update the creation progress bar.

Cancelling creation of a fixed size VHD leaves behind a file of that size, whereas cancelling creation of a VDI or VMDK will remove the images.

Creating HDD or QED images do not provide the fixed size option. I don't know if that is a limitation of that storage type or a missing feature.

[Frank Mehnert]

Right, this is especially a problem on Windows. The implementation between VDI and VHD is slightly different. Normally this shouldn't be necessary but we need to write zero-filled blocks to the fixed-sized images and update the progress object while doing that.

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.