echo >&2 "Error: neither mkisofs nor genisoimage available - can not create ISO."
exit 1
fi
+
+if ! which isohybrid >/dev/null 2>&1 ; then
+ echo "Error: isohybrid executable not found (install syslinux?)." >&2
+ exit 1
+fi
# }}}
# helper stuff {{{
case $name in
o) ISOFILE="$OPTARG";;
b) GRML2USB_OPTS+=(--bootoptions="$OPTARG");;
- c) DIR="$(readlink -f "$OPTARG")";;
+ c) DIR="$(readlink -f "$OPTARG")"; [ -n "$DIR" ] || { echo "Could not read $OPTARG - exiting" >&2 ; exit 1 ; } ;;
f) FORCE='true';;
r) GRML2USB_OPTS+=(--remove-bootoption="$OPTARG");;
p) GRML2USB_OPTS+=("$OPTARG");;
?) usage 2;;
esac
done
+
# test for specified URI
if [ -n "$URI" ] ; then
GRML2USB_OPTS+=(--bootoptions="fetch=$URI")
# move syslinux to isolinux {{{
mv "$WRKDIR"/cddir/boot/syslinux "$WRKDIR"/cddir/boot/isolinux
+ echo "menu label ^Isolinux prompt" > "$WRKDIR"/cddir/boot/isolinux/promptname.cfg
+ echo "include hd.cfg" >> "$WRKDIR"/cddir/boot/isolinux/grmlmain.cfg
+# }}}
+# change to $WRKDIR {{{
+ # make sure $WRKDIR is an absolute path, otherwise accessing files
+ # in it will fail later in the code path if user provided a
+ # relative directory
+ WRKDIR=$(realpath $WRKDIR)
cd "$WRKDIR/cddir"
- echo "menu label ^Isolinux prompt" > boot/isolinux/promptname.cfg
- echo "include hd.cfg" >> boot/isolinux/grmlmain.cfg
# }}}
# efi boot {{{
dd if=/dev/zero bs=1 count=1 seek=$ofs of="$ISOFILE" 2>/dev/null
# }}}
+# make ISO dd-able {{{
+ if isohybrid --help | grep -q -- --uefi ; then
+ echo "isohybrid version supports --uefi option, enabling"
+ ISOHYBRID_OPTIONS=--uefi
+ else
+ echo "isohybrid version does NOT support --uefi option, disabling"
+ fi
+
+ echo "Creating dd-able ISO using isohybrid"
+ isohybrid $ISOHYBRID_OPTIONS "$ISOFILE"
+# }}}
+
# cleanup {{{
cd "$ORIG_DIR"
sync