First off, I made this little tutorial for everyone having issues with a M28 drive and a VIA 6421 PCI SATA Card. First off, make sure any and all onboard SATA ports are disabled and make sure the VIA is the only PCI SATA card in your computer. Conflicts arise with more than one PCI SATA Controller card. What you need : Xtreme Bootmaker http://www.filefactory.com/file/db53e0/ A VIA 6421A or 6421L chipset PCI SATA Card. Here's the 6421A http://www.newegg.com/Product/Product.asp?Item=N82E16816132009 Xtreme 5.2 firmware - no link provided. Find in the "usual places" Firmware Toolbox 3.0 http://dl.qj.net/360-Firmware-Toolbox-3.0-Homebrew-Application-Xbox-360/pg/12/fid/11825/catid/505 Xtreme Bootmaker will format a floppy or USB stick to use and it can also set up a Harddrive to use with NTFS4DOS. I reccommend using a NEW floppy or USB stick. Now to setting up xtreme bootmaker to work with your 6421 PCI card. Open Xtreme Bootmaker and click Open to select your firmware you'd like to use. Since this is a M28 tutorial, you only need to select between xtrem52a/b/c/d Next put a check mark in "Use Custom MTKFlash" and select your VIA 6421 card. Click Detect ID - I/O. Then put a check mark in boxes labeled "M28 Bad Flash Combatibility" and "Apply Boke's patch for MS28 drives" Select your target drive (if floppy or USB stick put a checkmark into format and make bootable) Then click prepare drive. Your floppy,USB, or hard drive is then ready for the flash. Your Xtreme Bootmaker screen should look like this when done. When that's done, turn off the PC and hook up the Samsung 360 Drive SATA cable to the VIA 6421's primary SATA port. Follow these steps in this order : 1. Turn on the 360 2. Turn on the PC and boot to DOS with your bootdisk 3. When you get to the A:> Prompt type this 4. You should have an option called "xtreme primary", if you do, turn the 360 off 5. Select xtreme primary and count to 10 6. Turn the 360 back on and it should read from 0-100 4 times. When it's done and tells you to turn off the PC, power off the 360 and unplug the SATA cable from the VIA 6421. 7. Boot into Windows 8. Copy your orig.bin file from your floppy drive to the folder you extracted the xtreme 5.2 firmware. 9. Open Firmware Toolbox 3.0 and confirm you have a valid orig.bin file. It should look exactly like this picture but with a different key. 10. Once that is verified, your xtreme 5.2 folder should look like this. 11. Run the command "make extreme firmware" and select which speed you'd like A/B/C/D (I use A) and select you want it to report as a M28(default) 12. Now you should have a x52a.bin file in your xtreme 5.2 directory (or x52b.bin, x52c.bin, x52d.bin.. whichever you chose) 13. Open firmware toolbox again and open your x52x.bin file and confirm that it's the same key as orig.bin If everything is right, then copy your x52x.bin file to your bootdisk and power down the PC 14. Turn on the 360 15. Turn on the PC and boot to DOS with your bootdisk 16. When you get to the A:> Prompt type this "mtkflash w /m /sata x52x.bin" where the x52x is the name of your file and obviously, without the quotations. 17. You should have an option called "xtreme primary", if you do, turn the 360 off 18. Select xtreme primary and count to 10 19. Turn the 360 back on and you will see it flashing. When it's done and tells you to turn off the PC, power off the 360 and unplug the SATA cable from the VIA 6421. 20. Plug the 360 SATA cable back into the 360 motherboard and test. Sorry for all the pics, just trying to make this as newbie friendly as possible. Also note, I didn't use DOS to grab these images, that's why it's cmd.exe at the top of the pics. Hope this helps you all.