My very first Android device, the NOOKcolor 8GB, 1st gen, so technically, 'bout 7GB, they reserved 5GB for system and data partitions, left us 2GB for end-user storage.
Yeah, enjoy that.
Good thing was there was a way to re-partition.
For the G2, I haven't heard anyone mentioned about how to.
Official CM10.1 Nightly @ 1000MHz NOOKcolor
Offiical CM11 KK Nightly on Kindle Fire 1st-Gen
Rooted Kindle Fire HD 8.9" w/ Nova Launcher
Virgin JB 4.3 on Sony Xperia Tablet Z
Stock ROM KK 4.4.2 on LG-D800
Virgin Samsung Galaxy Tab 2 10.1 - LOST
Slimbean 8.1 on Galaxy S2 i777 - LOST