diff --git a/buildroot-external/board/ova/genimage.config b/buildroot-external/board/ova/genimage.config
index 8d6f27d7f..622adc5e3 100644
--- a/buildroot-external/board/ova/genimage.config
+++ b/buildroot-external/board/ova/genimage.config
@@ -3,15 +3,19 @@ image boot.vfat {
     files = {
       "bzImage"
     }
+    
+    file EFI/BOOT/BOOTx64.EFI {
+      image = "barebox.bin"
+    }
   }
-  size = 64M
+  size = 32M
 }
 
 image overlay.ext4 {
   ext4 {
     label = "overlay"
   }
-  size = 128M
+  size = 64M
 }
 
 image data.ext4 {
@@ -31,13 +35,13 @@ image sdcard.img {
     image = "boot.vfat"
   }
 
-  partition root-a {
+  partition root0 {
     partition-type = 0x83
     image = "rootfs.squashfs"
     size = 256M
   }
 
-  partition root-b {
+  partition root1 {
     partition-type = 0x83
     size = 256M
   }