diff --git a/fs/Vfat.cpp b/fs/Vfat.cpp
index 7bd05ec..6b5d7cf 100644
--- a/fs/Vfat.cpp
+++ b/fs/Vfat.cpp
@@ -108,6 +108,11 @@
             errno = EIO;
             return -1;
 
+        case 8:
+            SLOGE("Filesystem check failed (no filesystem)");
+            errno = ENODATA;
+            return -1;
+
         default:
             SLOGE("Filesystem check failed (unknown exit code %d)", rc);
             errno = EIO;