This tool modifies the normal behavior of the Wii System and therefore can cause unexpected problems if handled incorrectly. hacks_hash.ini should be on the sd in sd:/apps/priiloader (only once, they get copied to NAND) and can be found here. Just like preloader, Priiloader places itself in boot sequence before the system menu.
Priiloader is a modded version of Preloader. Please read the entire Readme before running the Priiloader installer. Attempting to use this homebrew on the vWii may result in the app not working, or may render the system unusable. This homebrew cannot be used on the vWii. This homebrew application makes permanent changes to the Wii's NAND, thus, this application should be used with caution.