MEMTEST_BIN="/boot/memtest86+.bin"
UBUNTU_INSTALL_NETBOOT="http://de.archive.ubuntu.com/ubuntu/dists/bionic/main/installer-amd64/current/images/netboot/netboot.tar.gz"
DEBIAN_INSTALL_NETBOOT="http://ftp.nl.debian.org/debian/dists/stretch/main/installer-amd64/current/images/netboot/netboot.tar.gz"