evoxm8 get here http://lotsofstuff.xoopiter.com/xbox/bios.rar that has rom.bin which are the bios and evtool which you use to edit the bios to boot and control things the way you want.
You have a 1.4 and your using the Spice and not ice Right?? Since you have a 1.4 use the X2 4983.06 or .67 if you want partition 7 or G drive. The .06 will put all extended space on F and the .67 will put all extended space up to 137 on F and the rest on G. The .06 basically means 6 partitions( C,E,F,X,Y,Z) and the .67 is 7 partitions(C,E,F,G,X,Y,Z) or if you want like Kakeakeai just said you could use the EvoxM8. Both the xxxx.06 and xxxx.67 will read HD up to 250GB.