Index: contrib/util/DownloadAndPatchSILO.sh
===================================================================
--- contrib/util/DownloadAndPatchSILO.sh	(revision 965dc18d04fb8a15431d34485959f4aa8e6ec4b5)
+++ contrib/util/DownloadAndPatchSILO.sh	(revision 965dc18d04fb8a15431d34485959f4aa8e6ec4b5)
@@ -0,0 +1,74 @@
+#!/bin/bash
+
+# Download SILO and patch it so that it can be used to create a bootable CD
+# for the Serengeti machine
+#  by Pavel Rimsky <rimskyp@seznam.cz>
+#  portions by Martin Decky <martin@decky.cz>
+#
+#  GPL'ed, copyleft
+#
+
+# stuff to be downloaded
+SILO_DOWNLOAD_FILE='silo-loaders-1.4.11.tar.gz'
+SILO_DOWNLOAD_URL='http://silo.auxio.org/pub/silo/old/'$SILO_DOWNLOAD_FILE
+
+# check whether the last command failed, if so, write an error message and exit
+check_error() {
+    if [ "$1" -ne "0" ]; then
+        echo
+        echo "Script failed: $2"
+        exit
+    fi
+}
+
+# temporary files are to be stored in /tmp
+# the resulting file in the current directory
+WD=`pwd`
+cd /tmp
+
+# download SILO from its official website
+echo ">>> Downloading SILO"
+wget $SILO_DOWNLOAD_URL
+check_error $? "Error downloading SILO."
+
+# unpack the downloaded file
+echo ">>> Unpacking tarball"
+tar xvzf $SILO_DOWNLOAD_FILE
+check_error $? "Error unpacking tarball."
+
+# CD to the unpacked directory
+echo ">>> Changing to the unpacked SILO directory"
+cd boot
+check_error $? "Changing directory failed."
+
+# patch it - remove bytes 512 to 512 + 32 (counted from 0), which belong to
+# the ELF header which is not recognized by the Serengeti firmware
+echo ">>> Patching SILO"
+(((xxd -p -l 512 isofs.b) && (xxd -p -s 544 isofs.b)) | xxd -r -p) \
+	 > isofs.b.patched
+check_error $? "Patching SILO failed"
+mv isofs.b.patched isofs.b
+
+# get rid of files which are not needed for creating the bootable CD
+echo ">>> Purging SILO directory"
+for file in `ls`; do
+	if [ \( -f $file \) -a \( $file != "isofs.b" \) -a \( $file != "second.b" \) ];
+		then
+		rm -fr $file;
+	fi
+done
+check_error $? "Purging SILO directory failed"
+
+# create the gzipped tarball with patched SILO
+echo ">>> Creating tarball with patched SILO"
+tar cvzf silo.patched.tar.gz *.b
+check_error $? "Creating tarball with patched SILO failed"
+
+# and move it to the directory where the user expects it to be
+echo ">>> Moving the tarball with patched SILO to the current directory"
+mv silo.patched.tar.gz $WD
+check_error $? "Moving the tarball with patched SILO failed"
+
+# move back to the working directory from /tmp
+cd $WD
+