diff --git a/sys/cam/ata/ata_da.c b/sys/cam/ata/ata_da.c
index 72ced86f05e1..b59c6492f3c6 100644
--- a/sys/cam/ata/ata_da.c
+++ b/sys/cam/ata/ata_da.c
@@ -1774,6 +1774,8 @@ adaregister(struct cam_periph *periph, void *arg)
 		softc->disk->d_flags |= DISKFLAG_UNMAPPED_BIO;
 		softc->unmappedio = 1;
 	}
+	if (cpi.hba_misc & PIM_ATA_EXT)
+		softc->flags |= ADA_FLAG_PIM_ATA_EXT;
 	strlcpy(softc->disk->d_descr, cgd->ident_data.model,
 	    MIN(sizeof(softc->disk->d_descr), sizeof(cgd->ident_data.model)));
 	strlcpy(softc->disk->d_ident, cgd->ident_data.serial,