转载；http://blog.csdn.net/cangwu_lee/article/details/5918194
环境：QQ2440V3、linux2.6.32.16
/etc/init.d/rcS
/bin/mount -n -t proc none /proc
/bin/mount -n -t sysfs none /sys
/bin/mount -n -t usbfs none /proc/bus/usb
/bin/mount -t ramfs none /dev
echo /sbin/mdev > /proc/sys/kernel/hotplug
/sbin/mdev -s
/bin/hotplug
# mounting file system specified in /etc/fstab
mkdir -p /dev/pts
mkdir -p /dev/shm
/bin/mount -n -t devpts none /dev/pts -o mode=0622
/bin/mount -n -t tmpfs tmpfs /dev/shm
/bin/mount -n -t ramfs none /tmp
/bin/mount -n -t ramfs none /var
mkdir -p /var/empty
mkdir -p /var/log
mkdir -p /var/lock
mkdir -p /var/run
mkdir -p /var/tmp
/etc/ fstab
# device mount-point type options dump fsck order
#----------------------------------------------------------------
procfs /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
usbfs /proc/bus/usb usbfs defaults 0 0
ramfs /dev ramfs defaults 0 0
none /dev/pts devpts mode=0622 0 0
/etc/ mdev.conf
# misc devices
sd[a-z][0-9] 0:0 0000 * /bin/hotplug.sh
sd[a-z] 0:0 0000 * /bin/hotplug.sh #mean all action
#sd[a-z] 0:0 666 $ /bin/hotplug.sh #mean remove
#sd[a-z] 0:0 666 @ /bin/hotplug.sh #mean add
mmcblk[0-9]p[0-9] 0:0 0000 * /bin/hotplug.sh
mmcblk[0-9] 0:0 0000 * /bin/hotplug.sh
/bin/hotplug.sh
#!/bin/sh
case $ACTION in
remove)
/bin/umount $MDEV || true
rmdir /mnt/$MDEV >/dev/null
;;
add)
/bin/mkdir -p /mnt/$MDEV
/bin/mount /dev/$MDEV /mnt/$MDEV
;;
esac
到这里，其实可以做更多的事情，例如自动播放MP3、自动播放图片、视频、等等功能。