diff --git a/sw/bootloader/src/test.c b/sw/bootloader/src/test.c
index a9ce44e..c6d506d 100644
--- a/sw/bootloader/src/test.c
+++ b/sw/bootloader/src/test.c
@@ -7,20 +7,31 @@
 
 static void test_rtc (void) {
     sc64_rtc_time_t t;
-    const char *weekdays[8] = { "", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
+    const char *weekdays[8] = {
+        "",
+        "Monday",
+        "Tuesday",
+        "Wednesday",
+        "Thursday",
+        "Friday",
+        "Saturday",
+        "Sunday",
+    };
 
     sc64_get_time(&t);
 
-    display_printf("RTC current time:\n");
-    display_printf("    %02d:%02d:%02d", FROM_BCD(t.hour), FROM_BCD(t.minute), FROM_BCD(t.second));
-    display_printf(" %s ", weekdays[FROM_BCD(t.weekday)]);
-    display_printf("%d.%02d.%04d", FROM_BCD(t.day), FROM_BCD(t.month), 2000 + FROM_BCD(t.year));
+    display_printf("RTC current time:\n ");
+    display_printf("%04d-%02d-%02d", 2000 + FROM_BCD(t.year), FROM_BCD(t.month), FROM_BCD(t.day));
+    display_printf("T");
+    display_printf("%02d:%02d:%02d", FROM_BCD(t.hour), FROM_BCD(t.minute), FROM_BCD(t.second));
+    display_printf(" (%s)", weekdays[FROM_BCD(t.weekday)]);
     display_printf("\n");
 }
 
 static void test_sd_card (void) {
     sc64_sd_card_status_t card_status;
     uint8_t card_info[32] __attribute__((aligned(8)));
+    uint8_t sector[512] __attribute__((aligned(8)));
 
     card_status = sc64_sd_card_get_status();
 
@@ -54,18 +65,36 @@ static void test_sd_card (void) {
 
     pi_dma_read((io32_t *) (SC64_BUFFERS->BUFFER), card_info, sizeof(card_info));
 
-    display_printf("SD Card registers:\n    CSD: 0x");
+    display_printf("SD Card registers:\n CSD: 0x");
     for (int i = 0; i < 16; i++) {
-        display_printf("%02X", card_info[i]);
+        display_printf("%02X ", card_info[i]);
     }
-    display_printf("\n    CID: 0x");
+    display_printf("\n CID: 0x");
     for (int i = 16; i < 32; i++) {
-        display_printf("%02X", card_info[i]);
+        display_printf("%02X ", card_info[i]);
     }
-    display_printf("\n           ");
+    display_printf("\n        ");
     for (int i = 16; i < 32; i++) {
-        display_printf("%c ", card_info[i] >= ' ' ? card_info[i] : 0xFF);
+        display_printf(" %c ", card_info[i] >= ' ' ? card_info[i] : 0xFF);
     }
+    display_printf("\n");
+
+    if (sc64_sd_read_sectors((void *) (SC64_BUFFERS->BUFFER), 0, 1)) {
+        display_printf("SD card read sector 0 error!\n");
+    }
+
+    pi_dma_read((io32_t *) (SC64_BUFFERS->BUFFER), sector, sizeof(sector));
+
+    display_printf("Sector 0 (0x1BE-0x1DD), partition entry 1/2:\n      0x");
+    for (int i = 0; i < 16; i++) {
+        display_printf("%02X ", sector[0x1BE + i]);
+    }
+    display_printf("\n      0x");
+    for (int i = 0; i < 16; i++) {
+        display_printf("%02X ", sector[0x1CE + i]);
+    }
+    display_printf("\n");
+    display_printf(" Boot signature: 0x%02X%02X", sector[510], sector[511]);
 }