diff --git a/bootstrap.sh b/bootstrap.sh
index b562c99..4f14417 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -106,6 +106,8 @@ osx_macports()
     install_macports_pkg "osxfuse"
     install_macports_pkg "x86_64-elf-gcc"
     install_macports_pkg "cmake"
+    install_macports_pkg "ninja"
+    install_macports_pkg "po4a"
 }
 
 ###############################################################################
@@ -137,6 +139,8 @@ osx_homebrew()
     install_brew_pkg "gcc@7" "gcc-7"
     install_brew_pkg "pkg-config"
     install_brew_pkg "cmake"
+    install_brew_pkg "ninja"
+    install_brew_pkg "po4a"
     install_brew_pkg "Caskroom/cask/osxfuse"
 
     install_brew_pkg "redox-os/gcc_cross_compilers/x86_64-elf-gcc" "x86_64-elf-gcc"
diff --git a/mk/config.mk b/mk/config.mk
index cdd69bd..0756ca4 100644
--- a/mk/config.mk
+++ b/mk/config.mk
@@ -23,16 +23,17 @@ CONTAINERFILE?=podman/redox-base-containerfile
 # Per host variables
 # TODO: get host arch automatically
 HOST_ARCH=x86_64
-HOST_CARGO=env --unset=RUSTUP_TOOLCHAIN cargo
+HOST_CARGO=env -u RUSTUP_TOOLCHAIN cargo
 UNAME := $(shell uname)
 ifeq ($(UNAME),Darwin)
-	FUMOUNT=sudo umount
+	FUMOUNT=umount
 	export NPROC=sysctl -n hw.ncpu
 	export REDOX_MAKE=make
 	PREFIX_BINARY=0
 	VB_AUDIO=coreaudio
 	VBM=/Applications/VirtualBox.app/Contents/MacOS/VBoxManage
 	HOST_TARGET ?= $(HOST_ARCH)-apple-darwin
+	ALLOC_FILE=truncate -s "$(FILESYSTEM_SIZE)m"
 else ifeq ($(UNAME),FreeBSD)
 	FUMOUNT=sudo umount
 	export NPROC=sysctl -n hw.ncpu
@@ -41,6 +42,7 @@ else ifeq ($(UNAME),FreeBSD)
 	VB_AUDIO=pulse # To check, will probaly be OSS on most setups
 	VBM=VBoxManage
 	HOST_TARGET ?= $(HOST_ARCH)-unknown-freebsd
+	ALLOC_FILE=fallocate --posix --length "$(FILESYSTEM_SIZE)MiB"
 else
 	# Detect which version of the fusermount binary is available.
 	ifneq (, $(shell which fusermount3))
@@ -54,6 +56,7 @@ else
 	VB_AUDIO=pulse
 	VBM=VBoxManage
 	HOST_TARGET ?= $(HOST_ARCH)-unknown-linux-gnu
+	ALLOC_FILE=fallocate --posix --length "$(FILESYSTEM_SIZE)MiB"
 endif
 
 # Automatic variables
diff --git a/mk/disk.mk b/mk/disk.mk
index f00ca65..9353883 100644
--- a/mk/disk.mk
+++ b/mk/disk.mk
@@ -2,7 +2,7 @@ $(BUILD)/harddrive.img: $(FSTOOLS_TAG) $(REPO_TAG)
 	mkdir -p $(BUILD)
 	rm -rf $@  $@.partial
 	-$(FUMOUNT) /tmp/redox_installer || true
-	fallocate --posix --length "$(FILESYSTEM_SIZE)MiB" $@.partial
+	${ALLOC_FILE} $@.partial
 	umask 002 && $(INSTALLER) -c $(FILESYSTEM_CONFIG) $@.partial
 	mv $@.partial $@
 
@@ -10,7 +10,7 @@ $(BUILD)/livedisk.iso: $(FSTOOLS_TAG) $(REPO_TAG)
 	mkdir -p $(BUILD)
 	rm -rf $@  $@.partial
 	-$(FUMOUNT) /tmp/redox_installer || true
-	fallocate --posix --length "$(FILESYSTEM_SIZE)MiB" $@.partial
+	${ALLOC_FILE} $@.partial
 	umask 002 && $(INSTALLER) -c $(FILESYSTEM_CONFIG) --live $@.partial
 	mv $@.partial $@
 
@@ -19,7 +19,7 @@ $(BUILD)/filesystem.img: $(FSTOOLS_TAG) $(REPO_TAG)
 	-$(FUMOUNT) $(BUILD)/filesystem/ || true
 	rm -rf $@  $@.partial $(BUILD)/filesystem/
 	-$(FUMOUNT) /tmp/redox_installer || true
-	fallocate --posix --length "$(FILESYSTEM_SIZE)MiB" $@.partial
+	${ALLOC_FILE} $@.partial
 	redoxfs/target/release/redoxfs-mkfs $(REDOXFS_MKFS_FLAGS) $@.partial
 	mkdir -p $(BUILD)/filesystem/
 	redoxfs/target/release/redoxfs $@.partial $(BUILD)/filesystem/