diff --git a/etc/etc.sgimips/Makefile.inc b/etc/etc.sgimips/Makefile.inc
index 706fe2dca7aa..5dcefc89ccbf 100644
--- a/etc/etc.sgimips/Makefile.inc
+++ b/etc/etc.sgimips/Makefile.inc
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile.inc,v 1.13 2005/05/10 21:58:03 martin Exp $
+#	$NetBSD: Makefile.inc,v 1.14 2005/10/04 16:11:15 martin Exp $
 #
 #	etc.sgimips/Makefile.inc -- sgimips-specific etc Makefile targets
 #
@@ -22,21 +22,19 @@ iso-image-md-pre:
 SGI.image= ${RELEASEDIR}/${MACHINE}/installation/cdrom/netbsd-sgimips.img
 
 iso-image-md-post:
-	EST=`ls -l ${CDROM.image} ${DESTDIR}/usr/mdec/aoutboot \
-		${DESTDIR}/usr/mdec/ip2xboot  ${DESTDIR}/usr/mdec/ip3xboot \
-		| awk '{ s += $$5} END { print int(s/1024/1024/32+1)*32 }'` ; \
-		echo "Estimated image size: $${EST} MB"; \
-		dd if=/dev/zero of=${SGI.image} bs=1024k count=$${EST}
-	${TOOLDIR}/bin/nbsgivol -f -i ${SGI.image}
-	${TOOLDIR}/bin/nbsgivol -f -w aoutboot ${DESTDIR}/usr/mdec/aoutboot \
-		${SGI.image}
-	${TOOLDIR}/bin/nbsgivol -f -w ip2xboot ${DESTDIR}/usr/mdec/ip2xboot \
-		${SGI.image}
-	${TOOLDIR}/bin/nbsgivol -f -w ip3xboot ${DESTDIR}/usr/mdec/ip3xboot \
-		${SGI.image}
-# Don't hardcode this. Pick it up from bootblock.h
-	SEEK=`awk '/SGI_BOOT_BLOCK_SIZE_VOLHDR/{print $$3}' \
+	@SEEK=`awk '/SGI_BOOT_BLOCK_SIZE_VOLHDR/{print $$3}' \
 		${DESTDIR}/usr/include/sys/bootblock.h` ; \
-		dd if=${CDROM.image} of=${SGI.image} bs=512 seek=$${SEEK}
+	EST=`ls -l ${CDROM.image} \
+		| awk '{ s += $$5} END { print int(('$${SEEK}'*512+s)/1024/1024/32+1)*32 }'` ; \
+	echo "Estimated image size: $${EST} MB"; \
+	dd if=/dev/zero of=${SGI.image} bs=1024k count=$${EST}; \
+	${TOOLDIR}/bin/nbsgivol -f -i ${SGI.image}; \
+	${TOOLDIR}/bin/nbsgivol -f -w aoutboot ${DESTDIR}/usr/mdec/aoutboot \
+		${SGI.image}; \
+	${TOOLDIR}/bin/nbsgivol -f -w ip2xboot ${DESTDIR}/usr/mdec/ip2xboot \
+		${SGI.image}; \
+	${TOOLDIR}/bin/nbsgivol -f -w ip3xboot ${DESTDIR}/usr/mdec/ip3xboot \
+		${SGI.image}; \
+	dd if=${CDROM.image} of=${SGI.image} bs=512 seek=$${SEEK}
 	mv ${SGI.image} ${CDROM.image}
 	rm -f ${RELEASEDIR}/ip2x ${RELEASEDIR}/ip3x