4700 SD Interface

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The SD interface supports both MicroSD and MicroSDHC cards. There is a linux driver provided in the default TS-4700 kernel that allows you to access the SD card block device as /dev/mmcblk0, or /dev/mmcblk0p# for accessing a specific partition. By default the TS-4700 will use this layout:

Device Contents
/dev/mmcblk0p1 Fat32 partition.
/dev/mmcblk0p2 Linux kernel.
/dev/mmcblk0p3 Initrd/Fastboot
/dev/mmcblk0p4 Debian Filesystem

The FAT32 partition isn't necessarily required, but unless Windows can recognize one of the partitions it will ask the user if they want to formt the disk. If you remove this partition you will need to modify the linuxrc scripts accordingly