Difference between revisions of "WiiScrubber"

Revision as of 01:21, 25 February 2008

Information

A useful app that allows you to 'scrub' away the garbage data of Wii ISOs and in most cases drastically reduces the size of the ISO. However this is not just for smaller storage, the ISOs still work on the Wii AFTER being compressed.

All credits go to Dack for making this program, and how to use it.

Purpose

It allows you to:

1. Open up the Wii iso's and extract individual files from them.

2. Change the iso so that unused areas are overwritten with 0xFFs. This

  has the effect of then making the ISO compressable.

Required

You need:

• You will need a copy of the ubiquitous "key.bin" in the same directory.

• You should not need to install any extra runtime files.

• A descrambled wii iso

• Plenty of disc space

• A fair bit of time.

Usage

How to use:

Copy the key.bin file to the same directory as the exe.

Load the software.

Load the ISO file by clicking on the 'load iso' button

What the program is doing appears in the bottom window

Disc filelist appears in the top window as a standard treelist

Name of game and size of the data on the disc appears in top right

How to extract files:

Only one at a time at present

In the treelist click on a file to select

Right click the mouse button

Select 'Save' from the popup menu

The fields on the filename shown are:

name, partition, Offset into decrypted file, Filesize

How to scrub the disc:

Click on the clean and save button

This creates a copy of the loaded ISO with the same name but (compress)

appended to the name before the .ISO part (so SPM.ISO would become

SPM(compress).ISO).

You still need 4.5 Gig of storage at this point but can specify which ddrive etc.

to save it on

Compressing this image should give you a figure close to the size of data

detailed earlier

Comments:

I've tried on quite a few files, checking the files that are then extracted and

all seems correct. But no 100% guarantees can be made that the cleaned ISO will

work. What I tend to do is extract all the files from an uncleaned image using wiitools

and then extract all the same files from a cleaned image and do a windiff on them to

check for any irregularities. There is always the potential that Nintendo will start

checking for these sort of changes in a firmware update. Just be aware.

Bugs/Updates

Limitations/Errors/Bugs/Features/Improvements:

You may notice the 'load' function on the file popup - that would be a target

Multiple file extraction would be more than useful but I thought it was better to

test the extraction function on single files first

I've got an issue where a release version will not work correctly, thats why this release is

a debug build. (*Love* finding those errors)

Yes the Icon is rubbish - one of my trademarks

File size is limited to 4.5 Gig as if the software is on a DL disc it probably needs to be

Some of the extracted Disc titles look odd - not my fault :)

Changes from 1.0:

1. Way of scrubbing changed slightly so that the sector crypto header is left

unchanged. This makes it a bit more difficult to detect but lessens the compressability.

2. Disc Filename display corrected so titles like MoH2 show correctly ;)

Changes from beta test version:

1. Key file now only needs to be in the same directory as the program

2. A progress bar with cancel option when you start scrubbing

3. appended file name changed to (compress) to avoid confusion

4. Clickable URL of gbatemp in about box.