From ca9c9fa0c13c735fcc4deda9f9a2eb21371aa5d9 Mon Sep 17 00:00:00 2001
From: Graicc <33105645+Graicc@users.noreply.github.com>
Date: Thu, 14 Nov 2024 16:28:58 -0500
Subject: [PATCH] Add support for partition id 04h

---
 src/lib.rs        | 3 +++
 src/volume_mgr.rs | 5 +++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 434808d..853a69b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -420,6 +420,9 @@ const PARTITION_ID_FAT16_LBA: u8 = 0x0E;
 /// Marker for a FAT16 partition. Seen on a card formatted with the official
 /// SD-Card formatter.
 const PARTITION_ID_FAT16: u8 = 0x06;
+/// Marker for a FAT16 partition smaller than 32MB. Seen on the wowki simulated
+/// microsd card
+const PARTITION_ID_FAT16_SMALL: u8 = 0x04;
 /// Marker for a FAT32 partition. What Macosx disk utility (and also SD-Card formatter?)
 /// use.
 const PARTITION_ID_FAT32_CHS_LBA: u8 = 0x0B;
diff --git a/src/volume_mgr.rs b/src/volume_mgr.rs
index 5cc69c9..de34a91 100644
--- a/src/volume_mgr.rs
+++ b/src/volume_mgr.rs
@@ -17,7 +17,7 @@ use crate::{
     },
     trace, Block, BlockCache, BlockCount, BlockDevice, BlockIdx, Error, RawVolume, ShortFileName,
     Volume, VolumeIdx, VolumeInfo, VolumeType, PARTITION_ID_FAT16, PARTITION_ID_FAT16_LBA,
-    PARTITION_ID_FAT32_CHS_LBA, PARTITION_ID_FAT32_LBA,
+    PARTITION_ID_FAT16_SMALL, PARTITION_ID_FAT32_CHS_LBA, PARTITION_ID_FAT32_LBA,
 };
 
 /// Wraps a block device and gives access to the FAT-formatted volumes within
@@ -195,7 +195,8 @@ where
             PARTITION_ID_FAT32_CHS_LBA
             | PARTITION_ID_FAT32_LBA
             | PARTITION_ID_FAT16_LBA
-            | PARTITION_ID_FAT16 => {
+            | PARTITION_ID_FAT16
+            | PARTITION_ID_FAT16_SMALL => {
                 let volume = fat::parse_volume(&mut data.block_cache, lba_start, num_blocks)?;
                 let id = RawVolume(data.id_generator.generate());
                 let info = VolumeInfo {