Can you try this patch?

Andrew

Index: sys/dev/ic/mlx.c
===================================================================
RCS file: /cvsroot/syssrc/sys/dev/ic/mlx.c,v
retrieving revision 1.9
diff -u -r1.9 sys/dev/ic/mlx.c
--- sys/dev/ic/mlx.c	2001/05/15 12:49:37	1.9
+++ sys/dev/ic/mlx.c	2001/06/06 09:42:35
@@ -544,7 +544,7 @@
 	    NULL, waitok);
 	if (me == NULL) {
 		printf("%s: ENQUIRY failed\n", mlx->mlx_dv.dv_xname);
-		return;
+		/* return; */
 	}
 
 	mes = mlx_enquire(mlx, MLX_CMD_ENQSYSDRIVE,
@@ -565,7 +565,7 @@
 		size = le32toh(mes[i].sd_size);
 		ms->ms_state = mes[i].sd_state;
 
-		if (i >= me->me_num_sys_drvs)
+		if (me != NULL && i >= me->me_num_sys_drvs)
 			continue;
 
 		/*