You don't need an icon to format the disk. Just run the Format program (from the System drawer on your boot disk) and choose your partition from the list. Or run format from the shell:
format drive dh0: name empty noicons quick
("dh0" being the name of the partition and "empty" being the name to be shown on the desktop).
If you partition is not in the list, you have to check your HDInstTools settings. You should read the guide which comes with PFS3 rather than following a dubious internet page.
Bye,
Thomas
