Replaced genisoimage with xorriso command

minimal.sh

@@ -32,18 +32,18 @@ cd ../isoimage
 cp ../syslinux-$SYSLINUX_VERSION/bios/core/isolinux.bin .
 cp ../syslinux-$SYSLINUX_VERSION/bios/com32/elflink/ldlinux/ldlinux.c32 .
 echo 'default kernel.gz initrd=rootfs.gz' > ./isolinux.cfg
-genisoimage \
-    -J \
-    -r \
-    -o ../minimal_linux_live.iso \
-    -b isolinux.bin \
-    -c boot.cat \
-    -input-charset UTF-8 \
-    -no-emul-boot \
-    -boot-load-size 4 \
-    -boot-info-table \
-    -joliet-long \
-    ./
+xorriso \
+  -as mkisofs \
+  -R \
+  -r \
+  -o ../minimal_linux_live.iso \
+  -b isolinux.bin \
+  -c boot.cat \
+  -input-charset UTF-8 \
+  -no-emul-boot \
+  -boot-load-size 4 \
+  -boot-info-table \
+./
 cd ..
 set +ex