I need a little help. I have an Xbox 360 Slim. Just bought a brand new WD320BPVT (WE Scorpio Blue 320GB, manuf. Aug 14 2012). None of the tutorials seem to cover ALL the steps. For me, I just need to flash the drive and create the compatibility partition for Xbox 1 games. Are my steps correct? Can you clarify my questions?
1. Create a bootable USB stick with wdidle3, hddhackr, some correct version of explorer 360, the correct HDDSS.bin, and the hoffman partition 2
2. Unplug all my drives and plug in the new 320 with the machine off of course
3. Boot the machine and go to bios to disable AHCI
4. Boot again this time to the USB stick
5. Run wdidle3 /D to turn of the head parking on the drive (this seems to be critical and is mentioned nowhere I could find in this thread)
6. Run Hddhackr and flash the new 320GB security partition (HDDSS.bin). Is capitalization important either in naming the file or referring to it? Notice "bin" is lower case here.
7. Restore the canned compatibility partition to the new drive somehow. Apparently by putting my regular hard drive back, booting to windows, connecting the 320GB drive as my second drive, and copying the hoffman partition 2 to the new drive.
8. Put the new drive in the XBox 360. Format it?
So my questions are:
A. Which version of what software do I use to put the Xbox 1 compatibility partition on the drive? I see notes about a 250 version and a 320 version of XPlorer 360, but it is very confusing which to use because of all the warnings about corrupting partitions. I would think I should use the 320 version, but it seems from reading that this only works for partition 3 and I should use the 250 version for partition 2. Which is it?
B. When I plug the drive into the XBox, do I have to format it? If I format it, will that just destroy what I just did to put the compatibility partition on there? What is the proper order? Do I have to put the drive in the xbox right after running hddhackr and then put it back in the computer to put the compatibility partition on there?
C. In order to run Xplorer 360, I would need to have both my windows drive and the new XBox Drive in the same PC, right? So now I have to borrow or buy another SATA cable, right?

Are there any jumper settings I should worry about either on my PC drive or the new WD320 drive?
D. A note said that if you "don't have Xbox live" they have the update file you can burn to CD and use that to get the latest update on the compatibility software. I don't have a paid XBox Live account, but I have an XBox free login and can see the things that are free. Is that good enough to get said update, or is this only for XBox Gold people and I have to do it manually with a CD?
E. I never had a hard drive on my slim, so what happens to the profiles, game saves, etc that are in memory on XBox? Do I just have more storage and everything in memory is still there and I just select where stuff is and where to store it? I don't have to copy anything from memory to the drive except for new games where I can say store on the drive? What's the best way to manage this?
Thanks!