(There's no video for Norton DiskDoubler Pro 1.1 yet. Please contribute to MR and add a video now!)
DisDoubler is a disk compression utility developed by Symantech.
Norton-DiskDoubler-Pro.img (1.41 MiB / 1.47 MB)
This file can be dragged onto the Mini vMac window / DiskCopy image
Emulating this? It should run fine under: Mini vMac