Index: sys/boot/efi/include/efilib.h
===================================================================
--- sys/boot/efi/include/efilib.h
+++ sys/boot/efi/include/efilib.h
@@ -82,6 +82,7 @@
 EFI_DEVICE_PATH *efi_devpath_last_node(EFI_DEVICE_PATH *);
 EFI_DEVICE_PATH *efi_devpath_trim(EFI_DEVICE_PATH *);
 bool efi_devpath_match(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *);
+int efi_devpath_is_prefix(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *);
 CHAR16 *efi_devpath_name(EFI_DEVICE_PATH *);
 void efi_free_devpath_name(CHAR16 *);
 
Index: sys/boot/efi/include/efizfs.h
===================================================================
--- sys/boot/efi/include/efizfs.h
+++ sys/boot/efi/include/efizfs.h
@@ -27,6 +27,7 @@
  */
 
 #include <stdint.h>
+#include <stdbool.h>
 
 #ifndef _EFIZFS_H_
 #define _EFIZFS_H_
@@ -45,6 +46,7 @@
 
 extern void efi_zfs_probe(void);
 extern zfsinfo_list_t *efizfs_get_zfsinfo_list(void);
+extern bool efi_zfs_is_preferred(EFI_HANDLE *h);
 extern EFI_HANDLE efizfs_get_handle_by_guid(uint64_t);
 
 #endif
Index: sys/boot/efi/libefi/devpath.c
===================================================================
--- sys/boot/efi/libefi/devpath.c
+++ sys/boot/efi/libefi/devpath.c
@@ -166,3 +166,32 @@
 	}
 	return (true);
 }
+
+int
+efi_devpath_is_prefix(EFI_DEVICE_PATH *prefix, EFI_DEVICE_PATH *path)
+{
+	int len;
+
+	if (prefix == NULL || path == NULL)
+		return (0);
+
+	while (1) {
+		if (IsDevicePathEnd(prefix))
+			break;
+
+		if (DevicePathType(prefix) != DevicePathType(path) ||
+		    DevicePathSubType(prefix) != DevicePathSubType(path))
+			return (0);
+
+		len = DevicePathNodeLength(prefix);
+		if (len != DevicePathNodeLength(path))
+			return (0);
+
+		if (memcmp(prefix, path, (size_t)len) != 0)
+			return (0);
+
+		prefix = NextDevicePathNode(prefix);
+		path = NextDevicePathNode(path);
+	}
+	return (1);
+}
Index: sys/boot/efi/libefi/efizfs.c
===================================================================
--- sys/boot/efi/libefi/efizfs.c
+++ sys/boot/efi/libefi/efizfs.c
@@ -81,12 +81,9 @@
 {
 	pdinfo_list_t *hdi;
 	pdinfo_t *hd, *pd = NULL;
-	EFI_GUID imgid = LOADED_IMAGE_PROTOCOL;
-	EFI_LOADED_IMAGE *img;
 	char devname[SPECNAMELEN + 1];
         uint64_t guid;
 
-	BS->HandleProtocol(IH, &imgid, (VOID**)&img);
 	hdi = efiblk_get_pdinfo_list(&efipart_hddev);
 	STAILQ_INIT(&zfsinfo);
 
@@ -105,7 +102,7 @@
                         if (zfs_probe_dev(devname, &guid) == 0) {
                                 insert_zfs(pd->pd_handle, guid);
 
-                                if (pd->pd_handle == img->DeviceHandle)
+                                if (efi_zfs_is_preferred(pd->pd_handle))
                                         pool_guid = guid;
                         }
 
Index: sys/boot/efi/loader/main.c
===================================================================
--- sys/boot/efi/loader/main.c
+++ sys/boot/efi/loader/main.c
@@ -72,6 +72,15 @@
 EFI_GUID fdtdtb = FDT_TABLE_GUID;
 EFI_GUID inputid = SIMPLE_TEXT_INPUT_PROTOCOL;
 
+static EFI_LOADED_IMAGE *img;
+
+bool
+efi_zfs_is_preferred(EFI_HANDLE *h)
+{
+        return (h == img->DeviceHandle);
+}
+
+
 static int
 has_keyboard(void)
 {
@@ -300,7 +309,6 @@
 main(int argc, CHAR16 *argv[])
 {
 	char var[128];
-	EFI_LOADED_IMAGE *img;
 	EFI_GUID *guid;
 	int i, j, vargood, howto;
 	UINTN k;
@@ -319,6 +327,9 @@
 	archsw.arch_zfs_probe = efi_zfs_probe;
 #endif
 
+        /* Get our loaded image protocol interface structure. */
+	BS->HandleProtocol(IH, &imgid, (VOID**)&img);
+
 	/* Init the time source */
 	efi_time_init();
 
@@ -446,9 +457,6 @@
 		if (devsw[i]->dv_init != NULL)
 			(devsw[i]->dv_init)();
 
-	/* Get our loaded image protocol interface structure. */
-	BS->HandleProtocol(IH, &imgid, (VOID**)&img);
-
 	printf("Command line arguments:");
 	for (i = 0; i < argc; i++)
 		printf(" %S", argv[i]);