Here it is, conversion of DD to HD floppy. How many of you knew about THIS 
.
Just because it somewhat works doesn't mean it's the right thing to do or that it will always work. Notched or taped disks used for different formats than they where intended for fail much quicker than regular due to the different material used.
I suggest you read this:
http://www.retrotechnology.com/herbs_stuff/guzis.html
