/dev/null: Permission denied

[Mohammad Moghimi <m.moghimi@gmail.com>]

Hi
I have started to remaster knoppix:
boot my computer with a knoppix bootable cd.
then mount a harddisk partition(say hda1).
then

code:

mkdir /mnt/hda1/source
mkdir /mnt/hda1/source/KNOPPIX

cp -Rp /KNOPPIX /mnt/hda1/source/KNOPPIX

then when I try to chroot to copied knoppix:

chroot /mnt/hda1/source/KNOPPIX

It gives me error message:

/dev/null: Permission denied
/dev/null: Permission denied
/dev/null: Permission denied
/dev/null: Permission denied

/dev/null: Permission denied
.
.
.

I checked the permission of /dev/null. but there is no problem in its permissions.
What should I do to fix this problem?

__________________
-- Mohammad