d-i preseed/early_command string \
    echo "while [ ! -f /var/lib/dpkg/info/partman-base.postinst ]; do sleep 1; done" > /kill-partman.sh && \
    echo "sed -i -e 's/partman/#partman/' /var/lib/dpkg/info/partman-base.postinst" >> /kill-partman.sh && \
    echo "cat >> /var/lib/dpkg/info/partman-base.postinst <<-EOF" >> /kill-partman.sh && \
    echo "sh /nld/partitioning.sh > /nld/partitioning.log 2>&1" >> /kill-partman.sh && \
    echo "EOF" >> /kill-partman.sh && \
    sh /kill-partman.sh > /tmp/kill-partman.log 2>&1 &