One of the exciting things about trying out Android on your HD2 is experimenting with all the weird and wonderful Android apps out there.
If you’re an HD2 owner who likes to install lots of apps and tinker around with Android, then you might be finding that 256MB of device memory just isn’t enough. (Remember Froyo is the only Android OS that let’s you install apps to SD without requiring a hack).
This is exactly how XDA forum member Kev007 felt and he went and did something about it. The XDA member has provided a fix to increase the size of the data.img file so that there will be more free space available once mounted.
Kev007 has posted various data.img files for 1GB and 512MB, corresponding to your HD2 Android build or if you prefer, instructions on how to resize your own data.img file. Instructions include those for Windows, Linux and Mac users.
For more information, check out the modification thread._________