EMMC

Size
PSVita eMMC size: 0xE3400000. PSVita eMMC size displayed on PC after connecting it using a card reader: 0xE1400000. ( https://yifan.lu/2014/01/11/dumping-the-vita-nand/ )

Partitions
PSVita eMMC can be accessed using SceSdif module. PSVita eMMC embeds the following partitions: