WARNING: I don't believe there's a way to undo this.
The BBBW has a 4 GB eMMC. For better reliability, I'm trying to put it into pSLC mode. Since the 4 GB eMMC is an MLC Flash with 2-bits per cell, converting it to pseudo-SLC mode (1-bit per cell) halves the total size.
Here's the original eMMC information: