Some programs like ISOBuster claim that they are able to convert DSK disk images to Virtual Hard Disk drives. The end result and if this really work however, could not be exactly verified.
Convert Disk image to Virtual Hard Disk.
We found one software available in the database for this conversion.
Microsoft Windows software - convert dsk to vhd on Windows
A highly specialized and easy to use CD, DVD and blu-ray data recovery tool
Convert from dsk file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.