Double/DriveSpace (TM) disk compression?
Simply perform your normal installation as per the Upgrade. Win95 comes with 32-bit versions of the DoubleSpace/DriveSpace drivers and they will unload the real mode drivers from memory when Win95 runs. 4.00.950B comes with DriveSpace 3 and the utilities needed to convert existing compressed drives to DriveSpace 3. You should pay attention to the info in FAQ page 11 for more help.