how to determine what drive sizes are in an upgraded DirecTiVo

[The Softwizard]

I know this is going to sound somewhat dumb, but I can't remember what sizes the drives are in my upgraded DirecTiVo. Rather than unplugging the unit and opening up the case, I was wondering if anyone know of a command that would be available within the xtreme image with surgeon's update that would show me what size the drives are. I searched already and I only found commands that I don't think are available on the TiVo (fdisk, p)

Thanx!