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7. Root File System
Root File system is the file system mounted in '/'.
Root File system should include dynamic library, device file, and indispensable utilities basically used for
system operation.
W5300E01-ARM uses Ramdisk for Root File system. NAND Flash area is used by mounting JFFS2 file
system at the Ramdisk
7.1. Ramdisk
Ramdisk uses a part of memory as like disk drive. Ramdisk is volatile because the file system exists on RAM.
If power is off, the saved data disappears.
If data should be preserved, the data should be written in NAND Flash area.
(For the detail, refer to '7.2 JFFS2'.)
You can change the Ramdisk composition. However, the size of Ramdisk cant' be over 12M (the maximum
size of Ramdisk)
7.1.1.
Modifying Ramdisk
1.
Copy Ramdisk Image from CD.
# cp /media/cdrom/Software/Image/ramdisk_w5300e01 /tftpboot
2.
Create the directory in which Ramdisk is mounted, and mount it.
# mkdir /mnt/ramdisk
# mount –t ext3 –o loop /tftpboot/ramdisk_w5300e01 /mnt/ramdisk
# cd /mnt/ramdisk
# ls
3.
Modify the file system mounted '/mnt/ramdisk' directory.
4.
Unmount it.
# cd /
# umount /mnt/ramdisk
5.
Input 'tftp 31000000 ramdisk_w5300e01' at the bootloader of the target board for downloading Ramdisk
image.
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