My Polaroid MP3 player came with 4GB (3.53GB actual) memory. I added a 4GB micro SD card (3.68GB actual). But they showed up on my computer as 2 separate USB storage devices. I tried to load a 4.2GB movie without any success. I got a message saying that there was not enough disk space on either one of the disks. How can I combine the two disk drives into one 8GB? I don't want to have to cut the video into two.
Your /best/ bet would be to get a bigger SD card. I use mine as a camera with a 16GB card in the SD slot. And then I keep my music on the "main drive" section.