--- a/sys/vfs/msdosfs/msdosfs_vnops.c	2026-06-29 12:51:19.000000000 +0000
+++ b/sys/vfs/msdosfs/msdosfs_vnops.c	2026-10-26 03:28:07.221962165 +0000
@@ -1329,7 +1329,7 @@
 	struct msdosfsmount *pmp = pdep->de_pmp;
 	struct buf *bp;
 	u_long newcluster, pcl;
-	int bn;
+	daddr_t bn;
 	int error;
 	struct denode ndirent;
 	struct timespec ts;