Index: boot/arch/sparc64/Makefile.inc
===================================================================
--- boot/arch/sparc64/Makefile.inc	(revision c98e6ee244a8e271a395a052069c23bca4f8b538)
+++ boot/arch/sparc64/Makefile.inc	(revision 29f8f8e3b2dd5fbe47f0fd28045b5a4c79c6d15f)
@@ -37,4 +37,5 @@
 	cp arch/$(ARCH)/silo/README arch/$(ARCH)/silo/COPYING arch/$(ARCH)/silo/silo.conf $(TMP)/boot
 	cp arch/$(ARCH)/loader/image.boot $(TMP)/HelenOS/image.boot
+	gzip $(TMP)/HelenOS/image.boot
 	mkisofs -f -G $(TMP)/boot/isofs.b -B ... -r -o $(BASE)/image.iso $(TMP)/
 
Index: boot/arch/sparc64/silo/silo.conf
===================================================================
--- boot/arch/sparc64/silo/silo.conf	(revision c98e6ee244a8e271a395a052069c23bca4f8b538)
+++ boot/arch/sparc64/silo/silo.conf	(revision 29f8f8e3b2dd5fbe47f0fd28045b5a4c79c6d15f)
@@ -1,3 +1,3 @@
 timeout = 0
-image = /HelenOS/image.boot
+image = /HelenOS/image.boot.gz
 	label = HelenOS