You will need a Synology DS410 and a Debian server to do this trick. The Synology also needs to be bootstrapped.
First bootstrap the DS410 telnet or ssh to the synology as root
wget http://ipkg.nslu2-linux.org/feeds/optware/syno-e500/cross/unstable/syno-e500-bootstrap_1.2-7_powerpc.xsh
sh ./syno-e500-bootstrap_1.2-7_powerpc.xsh
ipkg update
install some nesassary tools
ipkg install mc bash less vim man file findutils grep coreutils tar gzip bzip2 xz-utils sed
ipkg remove wget
ipkg install wget-ssl
ipkg install optware-devel
DS410 is now ready.
Lets go to the debian server. We only use the debian server shortly
start with
apt-get install debootstrap
mkdir synodebian
debootstrap --foreign --arch powerpc wheezy synodebian
Now the data should be send to the synology nas
tar cvzpf synodebian.tar.gz synodebian
scp synodebian.tar.gz root@minsynologyds410nas:/volume1/
Thats it, you dont have to use the debian server any more. The rest is on the synology nas
At the nas extract the tar file
cd /volume1/
tar xvzpf synodebian.tar.gz
Get the setup file and execute
wget --no-check-certificate -O /root/deb-setup.sh https://raw.githubusercontent.com/ouzo12/chroot-debian-synology-ds410/master/ds410/setup.sh
chmod +x /root/deb-setup.sh
./root/deb-setup.sh
After this setup is done you should be able to run the chroot
debian