[Q] Back Track 5 ARM in tablet, help ~thanks a lot - Android Q&A, Help & Troubleshooting

Hello XDA-Developers!
I want to install Back Track 5 ARM in my AllWinner A10 based tablet, I followed the lesson for Galaxy and I downloaded the boot script for Galaxy and the bt5.img(3.25G). I changed some of the codes to launch BT5 in external sdcard and suit my ROM,then launched it, only to find some errors. Well, the source code of the boot script(modified by myself to suit my device) like this:
perm=$(id|busybox cut -b 5)
if [ "$perm" != "0" ];then echo "This Script Needs Root! Type : su";exit;fi
mount -o remount,rw /dev/block/mmcblk0p1 /system
export kit=/mnt/extsd/BT5
export bin=/system/bin
export mnt=/mnt
mkdir -p $mnt
export PATH=$bin:/usr/bin:/usr/local/bin:/usr/sbin:/bin:/usr/local/sbin:/usr/games:$PATH
export TERM=linux
export HOME=/
if [ -b /dev/loop2 ]; then
echo "Loop device exists"
else
busybox mknod /dev/loop2 b 7 0
fi
busybox mount -o loop,noatime -t extsd $kit/bt5.img $mnt
busybox mount --bind /dev/pts $mnt/dev/pts
busybox mount --bind /proc $mnt/proc
busybox mount --bind /sys $mnt/sys
busybox sysctl -w net.ipv4.ip_forward=1
echo "nameserver 8.8.8.8" > $/etc/resolv.conf
echo "127.0.0.1 localhost bt5" > $/etc/hosts
busybox chroot $/bin/bash
echo "Shutting down BackTrack ARM For Xoom"
umount $/dev/pts
umount $/proc
umount $/sys
umount $mnt
when I launch the script(bootbtV) in Terminal Emulator, only to find some errors like this:
[email protected]:/ $ su
[email protected]:/ # cd mnt/extsd/BT5
[email protected]:/mnt/extsd/BT5 # sh bootbtV
Loop device exists
mount: mounting /dev/loop8 on /mnt failed: No such device
mount: mounting /dev/pts on /mnt/dev/pts failed: No such file or directory
mount: mounting /proc on /mnt/proc failed: No such file or directory
mount: mounting /sys on /mnt/sys failed: No such file or directory
net.ipv4.ip_forward = 1
bootbtV[23]: can't create $/etc/resolv.conf: No such file or directory
bootbtV[24]: can't create $/etc/hosts: No such file or directory
chroot: can't change root directory to $/bin/bash: No such file or directory
Shutting down BackTrack ARM For Xoom
failed: No such file or directory
failed: No such file or directory
failed: No such file or directory
failed: Invalid argument
1|[email protected]:/mnt/extsd/BT5 #
Well, In my opinion, according to the errors "No such file or directory", I think it is the difference between my device and Galaxy that causes the errors. In my device, the file structure is different from what the boot script means, such is the file structure of my device's root directory:
drwxr-xr-x root root 2013-01-16 11:22 acct
drwxrwx--- system cache 2013-01-16 09:51 cache
dr-x------ root root 2013-01-16 11:22 config
lrwxrwxrwx root root 2013-01-16 11:22 d -> /sys/kernel/debug
drwxrwx--x system system 2013-01-13 17:14 data
-rw-r--r-- root root 116 1970-01-01 08:00 default.prop
drwxr-xr-x root root 2013-01-16 11:27 dev
lrwxrwxrwx root root 2013-01-16 11:22 etc -> /system/etc
-rwxr-x--- root root 105268 1970-01-01 08:00 init
-rwxr-x--- root root 2344 1970-01-01 08:00 init.goldfish.rc
-rwxr-x--- root root 19030 1970-01-01 08:00 init.rc
-rwxr-x--- root root 2644 1970-01-01 08:00 init.sun4i.rc
-rwxr-x--- root root 2230 1970-01-01 08:00 init.sun4i.usb.rc
-rwxr-x--- root root 1637 1970-01-01 08:00 init.trace.rc
-rwxr-x--- root root 3915 1970-01-01 08:00 init.usb.rc
-rwxr-x--- root root 1536000 1970-01-01 08:00 initlogo.rle
drwxrwxr-x root system 2013-01-16 11:22 mnt
-rw-r--r-- root root 782728 1970-01-01 08:00 nand.ko
dr-xr-xr-x root root 1970-01-01 08:00 proc
drwx------ root root 2012-10-11 13:57 root
drwxr-x--- root root 1970-01-01 08:00 sbin
lrwxrwxrwx root root 2013-01-16 11:22 sdcard -> /mnt/sdcard
drwxr-xr-x root root 2013-01-16 11:22 sys
drwxr-xr-x root root 2013-01-13 17:59 system
-rw-r--r-- root root 272 1970-01-01 08:00 ueventd.goldfish.rc
-rw-r--r-- root root 3879 1970-01-01 08:00 ueventd.rc
-rw-r--r-- root root 1313 1970-01-01 08:00 ueventd.sun4i.rc
lrwxrwxrwx root root 2013-01-16 11:22 vendor -> /system/vendor
I think, the only way to launch BT5 in my device successfully is to modify the boot script so that it can suit my device, especially the file structure. But I am a green hand in Linux, I don't know what does some of the codes mean, if you are good at Linux script, would you please give me some advice?
Thank you very much!