diff --git a/sys/cam/mmc/mmc_da.c b/sys/cam/mmc/mmc_da.c
--- a/sys/cam/mmc/mmc_da.c
+++ b/sys/cam/mmc/mmc_da.c
@@ -1592,8 +1592,38 @@
 	part->disk->d_fwsectors = 0;
 	part->disk->d_fwheads = 0;
 
-	if (sdda_mmcsd_compat)
-		disk_add_alias(part->disk, "mmcsd");
+	if (sdda_mmcsd_compat) {
+#define	MMCSD_COMPAT_PREFIX	"mmcsd"
+		char cname[SDDA_PART_NAMELEN];	/* This equals the mmcsd namelen. */
+
+		switch (type) {
+		case EXT_CSD_PART_CONFIG_ACC_RPMB:
+			/* Should never be seen. */
+			snprintf(cname, sizeof(cname), MMCSD_COMPAT_PREFIX
+			    "d%drpmb", periph->unit_number);
+			break;
+		case EXT_CSD_PART_CONFIG_ACC_BOOT0:
+		case EXT_CSD_PART_CONFIG_ACC_BOOT1:
+			snprintf(cname, sizeof(cname), MMCSD_COMPAT_PREFIX
+			    "%dboot", periph->unit_number);
+			break;
+		case EXT_CSD_PART_CONFIG_ACC_DEFAULT:
+			memcpy(cname, MMCSD_COMPAT_PREFIX,
+			    sizeof(MMCSD_COMPAT_PREFIX));
+			break;
+		case EXT_CSD_PART_CONFIG_ACC_GP0:
+		case EXT_CSD_PART_CONFIG_ACC_GP1:
+		case EXT_CSD_PART_CONFIG_ACC_GP2:
+		case EXT_CSD_PART_CONFIG_ACC_GP3:
+			snprintf(cname, sizeof(cname), MMCSD_COMPAT_PREFIX
+			    "d%dgp", periph->unit_number);
+			break;
+		default:
+			panic("%s: Unknown type %d for disk alias\n", __func__, type);
+		}
+		disk_add_alias(part->disk, cname);
+#undef MMCSD_COMPAT_PREFIX
+	}
 
 	/*
 	 * Acquire a reference to the periph before we register with GEOM.