आधिकारिक टिप्पणी
The GeoTiffs the system creates already have all of the georeferencing data embedded in it and most softwares will recognize it as it is.
Using the 'Translate' step in QGIS may be a little different in each version but it usually shows you the raw command that is going to be run at the end. You want to add "-co tfw=yes" to the end of the command and it will rewrite the file with a world file.
All the world file really does is give a center point and a scale to the pixels.