JFFS2 & MTD mount Question?

Original Question:

2008-12-26 01:06:38 Help: mount -t jffs2 /dev/mtd2 /mnt failed!

Tony Liu (CHINA) Message ID: 67120	CPU: BF531 SPI Flash: M25P64 System start i can get the info as below: root: /> cat /proc/mtd dev: size erasesize name mtd0: 00040000 00010000 "bootloader" mtd1: 003c0000 00010000 "kernel" mtd2: 00400000 00010000 "file system" root: /> erase /dev/mtd2 Erasing 64 Kibyte @ 0 -- 0 % complete.Erasing 64 Kibyte @ 10000 -- 1 % ...................... Erased 4096 Kibyte @ 0 -- 100% complete. root: />mount -t jffs2 /dev/mtd2 /mnt mount: mounting /dev/mtd2 on /mnt failed Why & How to do ? BR!
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2008-12-26 03:02:08 Re: Help: mount -t jffs2 /dev/mtd2 /mnt failed!

Tony Liu (CHINA) Message ID: 67122	Test mtd2 can use? As below: root:/bin> time cp md5sum /dev/mtd2 real0m 1.83s user0m 0.00s sys0m 0.38s From the information mtd2 is OK? But mount failed! ???????????????
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2008-12-26 03:35:47 Re: Help: mount -t jffs2 /dev/mtd2 /mnt failed!

Tony Liu (CHINA) Message ID: 67123	Now mount jffs2 is ok. But I don't know the reason! Who could tell me? System boot, then using: root:> cd /dev root:/dev> mount -t jffs2 mtd2 /mnt It's OK! But Using: root:> mount -t jffs2 /dev/mtd2 /mnt failed! Must enter the /dev dir ? 很是奇怪？ 原因何在？