Ok, back when I was still running the regular Nook software (rooted or not), there was a 5GB chunk of memory that I could access and store stuff in. It even showed up as a drive, along with the SD card, when I connected to a PC by USB. Once I put Froyo on, I lost that memory. I don't see it from the file manager program, and can't access it from the PC (the drive icon shows up like before, but access is denied). Any way to get into this memory?