This will be in several posts to make this easier to read and understand.
There are several requirements I will list here, first:
1) A way to use webtop - The HD, or lapdock, or have completed the webtop mod for the HDMI connection Here
2) This is most important, and if you completed 1, then you most likely have done it, root your Atrix 2
3) A USB SDcard reader. I have the Sandisk imagemagick, but any one you like will do
4) Be able to ADB from your computer to your phone
5) Not afraid of a little command line work
Depending upon your operating system, free software is available so that you can partition and format your device without losing all the data on it.
You will need to get one of the apps / iso images below, I recommend the live iso with gparted on it, just because I am a UNIX/ Linux guy by trade and choice, and this is what I use.
Linux gparted live iso image:
Windows MiniTool Partition Wizard:
You must create a parition on your SDcard for webtop, as this is is a full Operating System and takes a good bit of space. I made mine around 8GB on my 32GB card, and for the purpose of showing you here, I created a 4GB partition on a spare 16GB card I have. 1GB is the minimum, because that is what is already being used on the Atrix2 and I think it is about 80% full or so.
The partition you create MUST be a primary partition and formated to ext3.
For Windows here are some screen shots from another board that may help, with instructions:
This is what the MiniTool Partition Wizard screen looks like when I have an 8 GB SD card inserted. As you can see, there's currently one single FAT32 partition present.
When you right click on the partition, you'll see a Move/Resize option. That's the one you want to select for non-destructive partitioning.
At that point, you can select how large you want your partition to be. You want to make sure that the "Unallocated Space Before" stays at 0.00 MB, so that the new partition will be the second one. In my case, I've opted to create a 4 GB partition as the second partition.
Once that has been set up, right click on the Unallocated space, then select Create.
We're not worried about the warning that Windows throws up, particularly since we know we'll be creating a partition that Windows can't read anyways. So just hit Yes.
Create the second partition at the maximum size with the following settings:
Create As: Primary
File System: Ext3
After that's done, click on the Apply Changes button.
And now you're done! Put the card back into your Atrix2
Now for gparted:
If you are familiar with Linux and know how to use gparted, just resize your FAT32 partition to whatever size you want, then create a partition at least 1GB in size (I recommend 4GB), and make it an EXT3.
Now for the rest that are using the iso here is some info and screen prints:
Here is a screen print of my desktop with gparted running:
Now in the upper right corner there is a little drop down that has something like /dev/sda in it, change this to your SDcard, mine was /dev/sdc.
Next right click on the partition in the middle of the screen, it should be surrounded in green, then click Resize/Move:
Then when the next screen comes up, drag the arrow from the left to the middle of the screen to resize the partition, to the size you want, this is in MegaBytes:
Now will have one partition that is ready to resize, and it should look like this, you will click on the "Apply all Operations button":
Then a little window with the percentage will show up and tell you when it is complete, just click the close button when it finishes.
Next you will right click on the unallocated part of the SDcard and click new:
Then you will tell it how big in new size box, I let it do the whole thing at 4GB, then select ext3 in the File system drop down menu:
Then after you click add in the last screen, you will click the "Apply all Operations button" Again:
Now it will show the percentage window again, and when it is complete, click the close button.
Done! Now it should look like this:
Put your SDcard back into your phone now.
Next will be how to copy over some patches and a script that will do a lot more, and a manual way for the brave.