wget ftp://ftp.debian.org/debian/dists/squeeze/main/installer-i386/current/images/hd-media/boot.img.gz
wget http://cdimage.debian.org/cdimage/squeeze_di_alpha1/i386/iso-cd/debian-testing-i386-businesscard.iso
zcat boot.img.gz > /dev/sdb
mount /dev/sdb /mnt
cp debian-testing-i386-businesscard.iso /mnt/
umount /mnt


http://www.coagul.org/spip.php?article584


wget http://cdimage.debian.org/cdimage/squeeze_di_alpha1/i386/iso-cd/debian-testing-i386-netinst.iso
apt-get install unetbootin
mount /dev/sdb /mnt
unetbootin