diff --git a/.gitignore b/.gitignore
index 4e1afa5..e6f5c3e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /build/
 /prefix/
 .config
+**/my_*
diff --git a/installer b/installer
index c91bea9..b23b2f6 160000
--- a/installer
+++ b/installer
@@ -1 +1 @@
-Subproject commit c91bea94524996d82c9268a085a4116c5856b765
+Subproject commit b23b2f6e5db1a463769ff864aac994ff0eb83119
diff --git a/mk/config.mk b/mk/config.mk
index d0eff35..6a7a70d 100644
--- a/mk/config.mk
+++ b/mk/config.mk
@@ -61,6 +61,9 @@ INSTALLER=installer/target/release/redox_installer
 ifeq ($(REPO_BINARY),0)
 INSTALLER+=--cookbook=cookbook
 REPO_TAG=$(BUILD)/repo.tag
+else
+INSTALLER+=--cookbook=cookbook --cooking
+REPO_TAG=$(BUILD)/repo.tag
 endif
 
 FSTOOLS_TAG=build/fstools.tag
diff --git a/mk/disk.mk b/mk/disk.mk
index f73858f..f00ca65 100644
--- a/mk/disk.mk
+++ b/mk/disk.mk
@@ -3,7 +3,7 @@ $(BUILD)/harddrive.img: $(FSTOOLS_TAG) $(REPO_TAG)
 	rm -rf $@  $@.partial
 	-$(FUMOUNT) /tmp/redox_installer || true
 	fallocate --posix --length "$(FILESYSTEM_SIZE)MiB" $@.partial
-	$(INSTALLER) -c $(FILESYSTEM_CONFIG) $@.partial
+	umask 002 && $(INSTALLER) -c $(FILESYSTEM_CONFIG) $@.partial
 	mv $@.partial $@
 
 $(BUILD)/livedisk.iso: $(FSTOOLS_TAG) $(REPO_TAG)
@@ -11,7 +11,7 @@ $(BUILD)/livedisk.iso: $(FSTOOLS_TAG) $(REPO_TAG)
 	rm -rf $@  $@.partial
 	-$(FUMOUNT) /tmp/redox_installer || true
 	fallocate --posix --length "$(FILESYSTEM_SIZE)MiB" $@.partial
-	$(INSTALLER) -c $(FILESYSTEM_CONFIG) --live $@.partial
+	umask 002 && $(INSTALLER) -c $(FILESYSTEM_CONFIG) --live $@.partial
 	mv $@.partial $@
 
 $(BUILD)/filesystem.img: $(FSTOOLS_TAG) $(REPO_TAG)
@@ -25,7 +25,7 @@ $(BUILD)/filesystem.img: $(FSTOOLS_TAG) $(REPO_TAG)
 	redoxfs/target/release/redoxfs $@.partial $(BUILD)/filesystem/
 	sleep 1
 	pgrep redoxfs
-	$(INSTALLER) -c $(FILESYSTEM_CONFIG) $(BUILD)/filesystem/
+	umask 002 && $(INSTALLER) -c $(FILESYSTEM_CONFIG) $(BUILD)/filesystem/
 	sync
 	-$(FUMOUNT) $(BUILD)/filesystem/ || true
 	rm -rf $(BUILD)/filesystem/