3 files changed, 13 insertions, 1 deletions

diff --git a/apps/debug_menu.c b/apps/debug_menu.c
index c1d54ccf97..02b86feefc 100644
--- a/apps/debug_menu.c
+++ b/apps/debug_menu.c
@@ -1253,7 +1253,7 @@ static bool dbg_disk_info(void)
     bool done = false;
     int i;
     int page = 0;
-    const int max_page = 10;
+    const int max_page = 11;
     unsigned short* identify_info = ata_get_identify();
     bool timing_info_present = false;
     char pio3[2], pio4[2];
@@ -1374,6 +1374,12 @@ static bool dbg_disk_info(void)
                     lcd_puts(0, y++, "No timing info");
                 }
                 break;
+
+            case 11:
+                lcd_puts(0, y++, "Cluster size");
+                snprintf(buf, 128, "%d bytes", fat_get_cluster_size());
+                lcd_puts(0, y++, buf);
+                break;
         }
         lcd_update();
 
diff --git a/firmware/drivers/fat.c b/firmware/drivers/fat.c
index 3e43e1c787..0c8997d94a 100644
--- a/firmware/drivers/fat.c
+++ b/firmware/drivers/fat.c
@@ -1989,3 +1989,8 @@ int fat_getnext(struct fat_dir *dir, struct fat_direntry *entry)
     }
     return 0;
 }
+
+int fat_get_cluster_size(void)
+{
+    return fat_bpb.bpb_secperclus * SECTOR_SIZE;
+}
diff --git a/firmware/export/fat.h b/firmware/export/fat.h
index dbc0ab20cc..db8737cfd3 100644
--- a/firmware/export/fat.h
+++ b/firmware/export/fat.h
@@ -94,5 +94,6 @@ extern int fat_rename(struct fat_file* file,
 
 extern int fat_opendir(struct fat_dir *ent, unsigned int currdir);
 extern int fat_getnext(struct fat_dir *ent, struct fat_direntry *entry);
+extern int fat_get_cluster_size(void);
 
 #endif