Index: uspace/srv/fs/exfat/exfat.c
===================================================================
--- uspace/srv/fs/exfat/exfat.c	(revision b33870b00ba2bd8f14a2d09b6b7de5f304c5b953)
+++ uspace/srv/fs/exfat/exfat.c	(revision 286286c5dfab310b2f006338cff4f2898bce1ca2)
@@ -54,5 +54,6 @@
 	.name = NAME,
 	.concurrent_read_write = false,
-	.write_retains_size = false,	
+	.write_retains_size = false,
+	.instance = 0,
 };
 
@@ -60,4 +61,13 @@
 {
 	printf(NAME ": HelenOS exFAT file system server\n");
+
+	if (argc == 3) {
+		if (!str_cmp(argv[1], "--instance"))
+			exfat_vfs_info.instance = strtol(argv[2], NULL, 10);
+		else {
+			printf(NAME " Unrecognized parameters");
+			return -1;
+		}
+	}
 
 	int rc = exfat_idx_init();