diff --git a/vmware-esxi.json b/vmware-esxi.json
index edd56ee..0cacf28 100644
--- a/vmware-esxi.json
+++ b/vmware-esxi.json
@@ -39,6 +39,7 @@
                 "qemu-nbd -d /dev/nbd4",
                 "qemu-nbd -c /dev/nbd4 -f raw -n output-qemu/packer-qemu",
                 "partprobe /dev/nbd4",
+                "sleep 10",
                 "mount /dev/nbd4p1 $TMP_DIR",
                 "mkdir -p $TMP_DIR/curtin",
                 "cp curtin-hooks $TMP_DIR/curtin",