★ブートメッセージ
Creating 7 MTD partitions on "physmap-flash.0":
0x000000000000-0x000000040000 : "bootloader"
0x000000040000-0x000000080000 : "config"
0x000000080000-0x0000000c0000 : "license"
0x0000000c0000-0x0000004c0000 : "firmware"
0x0000004c0000-0x0000008c0000 : "kernel"
0x0000008c0000-0x000007ac0000 : "userland"
0x000007ac0000-0x000008000000 : "application"
★コマンド確認
[root@armadillo840-0 (ttySC2) ~]# cat /proc/mtd
dev:	size   erasesize  name
mtd0: 00040000 00020000 "bootloader"
mtd1: 00040000 00020000 "config"
mtd2: 00040000 00020000 "license"
mtd3: 00400000 00020000 "firmware"
mtd4: 00400000 00020000 "kernel"
mtd5: 07200000 00020000 "userland"
mtd6: 00540000 00020000 "application"
★mtd6をフォーマットします(最初の1回だけ)
[root@armadillo840-0 (ttySC2) ~]# flash_eraseall -j /dev/mtd6
flash_eraseall: /dev/mtd6: Permission denied
[root@armadillo840-0 (ttySC2) ~]# echo 0 > /sys/class/mtd/mtd6/ro
[root@armadillo840-0 (ttySC2) ~]# flash_eraseall -j /dev/mtd6
Erasing 128 Kibyte @ 0 --  0 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 20000 --  2 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 40000 --  4 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 60000 --  7 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 80000 --  9 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ a0000 -- 11 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ c0000 -- 14 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ e0000 -- 16 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 100000 -- 19 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 120000 -- 21 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 140000 -- 23 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 160000 -- 26 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 180000 -- 28 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 1a0000 -- 30 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 1c0000 -- 33 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 1e0000 -- 35 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 200000 -- 38 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 220000 -- 40 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 240000 -- 42 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 260000 -- 45 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 280000 -- 47 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 2a0000 -- 50 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 2c0000 -- 52 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 2e0000 -- 54 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 300000 -- 57 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 320000 -- 59 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 340000 -- 61 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 360000 -- 64 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 380000 -- 66 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 3a0000 -- 69 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 3c0000 -- 71 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 3e0000 -- 73 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 400000 -- 76 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 420000 -- 78 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 440000 -- 80 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 460000 -- 83 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 480000 -- 85 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 4a0000 -- 88 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 4c0000 -- 90 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 4e0000 -- 92 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 500000 -- 95 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 520000 -- 97 % complete.
flash_eraseall: /dev/mtd6: MTD Erase failure: Read-only file system
Erasing 128 Kibyte @ 540000 -- 100 % complete.

★mtd6をマウント
[root@armadillo840-0 (ttySC2) ~]# mount -t jffs2 /dev/mtdblock6 /mnt
mount: mounting /dev/mtdblock6 on /mnt failed: Device or resource busy
[root@armadillo840-0 (ttySC2) ~]# echo 0 > /sys/class/mtd/mtd6/ro
[root@armadillo840-0 (ttySC2) ~]# mount -t jffs2 /dev/mtdblock6 /mnt
mount: mounting /dev/mtdblock6 on /mnt failed: Device or resource busy