QUOTE(Drunkn_Munky @ Nov 18 2006, 10:05 PM)

By disabling all IDE devices, does that include the hard drive? Because when I use a floppy for MTKFlash it just seems to freeze. If I disable my CDRW, and use MTKFlash it doesn't detect anything, so I'm hoping this method will work. There's more details of my problem
here in case you wanted to know.
Nice Guide, thanks
Mine is flashed with Xtreme 4.2A, great stuff.
I just flashed by DVD MS28 with Xtreme 4.2A using a VIA 2641A PCI CARD ($10 from Ebay)
I used Xtreme bootmaker and SAM360 like in the guide
1) First disconnect everything IDE and SATA from your PC
2) Connect XBOXDVD drive to the SATA1 (PRIMARY), on the PCI CARD thats connector on the side of the PCI, it is facing the front of the PC.
3) Power on PC and boot using Floppy / USB Disk made for Xtreme bootmaker
4) Power on XBOX360
5) Type 'SAMREAD XXXXXXX XXXXX' (where x is your serial number) and press 'ENTER'
6) A menu appears, Select the channel of the XBOX and power off XBOX360
7) Awaiting 10 sec

Power on XBOX360
9) Read firmware its loops 3-4 times before the process completes
10) Poweroff for XBOX
11) Type 'SAMHACK XXXXXXX XXXXX' (where x is your serial number) and press 'ENTER' repeat steps 6
- 10
It have tried for many guides and different combination of SATA controllers. Only this has work for me.