Alright so I finally have completed this into the range of acceptable.
These instructions MUST BE FOLLOWED TO THE LETTER.
For a video tutorial of the One click you may watch this: http://youtu.be/0MFQJpgVqeU?hd=1 [Thanks Alot leatherneck6017!]
For a Video tutorial of the flashable zip, you can watch this: http://youtu.be/77-PYDtETxQ?hd=1 [Thanks again leatherneck!]
Firstly you need to download the following: [UPDATED!]
IF YOU WANT TO USE THE FLASHABLE .ZIP METHOD DOWNLOAD THIS AND PUT IT ON YOUR SDCARD: http://efragtv.com/android/EXT4-Formatter.zip
This file contains all you need to use adb, format your partitions to ext4, and be on the way to using EXT4.
Start by downloading from the link above and extracting somewhere on your computer.
NOTE: This does not currently work when coming from Cyanogen! Flash to normal DK28, or wait for the CM version later tonight!
Next you need to download and install the One Click Root/Clockwork mod redirector, or if you are running quantum rom 2.1, you are good to go.
From inside android, enable USB Debugging (Settings->Application->Development)
Copy the two zip files from the OneClickEXT4 directory in the first step, and place them on your SDCard (You can use adb push, usb mass storage, or an sdcard reader)
Now you need to open up a command prompt in windows. To do this, Hit either Start->Run, or Hold the Windows Key and hit R, and type in cmd and hit enter.
Next you need to type : cd /path/you/extracted/OneClickEXT4
Now type the following into that window and hit enter:
adb reboot recovery
Now flash the prepare.zip file included in the OneClick.
After the file is done flashing, use adb reboot recovery again
adb reboot recovery
Now if everything went well, you are now in the modified ClockWork Mod recovery, and you should see the version number 126.96.36.199 at the top.
From here you have two choices. You can use the old One Click .bat file method, or you can use the new, and much easier, flashable .zip method.
For the OLD ONE CLICK METHOD:
You need to run the install-ext4.bat file. To run it, simply double click on it. Make sure your phone is connected and seen by adb.
[NOTE : If it says device not found, unplug the phone, and replug the cable and try again]
For the NEW FLASHABLE .ZIP METHOD:
At this point, make sure it says 188.8.131.52 at the top of your screen. If it does, simply flash the EXT4-Formatter.zip file you downloaded earlier. THIS WILL TAKE A LONG TIME. It takes a while to format the partitions.
After it is finished, DO NOT REBOOT.
Flash your ROM of choice, and then flash the kernel included in the OneClick.
This will format /cache /data and /system to ext4
YOU WILL LOSE ALL DATA ON THE PHONE
After this is complete, you may flash a DK28 ROM . I recommend Quantum Rom v2.5.0.
Please note that until other ROMs add support (namely the new recovery binary in /system/bin/recoveryfiles) I cannot guarantee recovery will function properly.
HUGE NOTE: AFTER FLASHING THE ROM, YOU MUST FLASH THE KERN-DK28EXT4.zip FILE !!!
After this is complete, you may now reboot.
You now have EXT4, and no more RFS
[NOTE: NOT CURRENTLY COMPATIBLE WITH CYANOGEN MOD, I WILL BE PORTING IT OVER THIS WEEK]