menuconfig DISK select BLOCK bool "Disk support " help Add support for disk like drives like harddisks, CDROMs, SD cards and CF cards. if DISK config DISK_WRITE select BLOCK_WRITE bool "support writing to disk drives" comment "drive types" config DISK_DRIVE bool "Generic disk drives" help Add support for generic disk drives. Common behaviour for this kind of devices is using a partition table in the first sector. Say Y here if you intend to work with disk drives (also CF cards and SD cards). comment "interface types" config ATA_BIOS bool "BIOS based" select DISK_DRIVE depends on X86_BIOS_BRINGUP help Gain disk drive access via int13 calls to the standard PC-BIOS. The advantage of this driver is, it still uses user's defined boot media to work on. Disadvantage is: Due to its 16 bit nature it is slow. endif