default linux label linux kernel vmlinuz append initrd=initrd.gz boot=casper-net nfsroot=LIVE_SERVER_ADDRESS:LIVE_SERVER_PATH LIVE_BOOTAPPEND label memtest kernel memtest display isolinux.txt timeout 0 prompt 1 f1 f1.txt f3 f3.txt f4 f4.txt f8 f8.txt f9 f9.txt f0 f10.txt