diff --git a/components/fatfs/diskio/diskio_rawflash.c b/components/fatfs/diskio/diskio_rawflash.c
index 8ffa5715e8..4b23b63c5e 100644
--- a/components/fatfs/diskio/diskio_rawflash.c
+++ b/components/fatfs/diskio/diskio_rawflash.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -11,30 +11,71 @@
 #include "esp_log.h"
 #include "diskio_rawflash.h"
 #include "esp_compiler.h"
-#include "spi_flash_mmap.h"
-
 
 static const char* TAG = "diskio_rawflash";
 
-const esp_partition_t* ff_raw_handles[FF_VOLUMES];
+static const esp_partition_t* s_ff_raw_handles[FF_VOLUMES];
+// Determine the sector size and sector count by parsing the boot sector
+static size_t s_sector_size[FF_VOLUMES];
+static size_t s_sectors_count[FF_VOLUMES];
+static uint8_t s_initialized[FF_VOLUMES];
+
+#define BPB_BytsPerSec 11
+#define BPB_TotSec16 19
+#define BPB_TotSec32 32
 
 
 DSTATUS ff_raw_initialize (BYTE pdrv)
 {
-    return 0;
+
+    uint16_t sector_size_tmp;
+    uint16_t sectors_count_tmp_16;
+    uint32_t sectors_count_tmp_32;
+
+    const esp_partition_t* part = s_ff_raw_handles[pdrv];
+    assert(part);
+    esp_err_t err = esp_partition_read(part, BPB_BytsPerSec, &sector_size_tmp, sizeof(sector_size_tmp));
+    if (unlikely(err != ESP_OK)) {
+        ESP_LOGE(TAG, "esp_partition_read failed (0x%x)", err);
+        return RES_ERROR;
+    }
+    s_sector_size[pdrv] = sector_size_tmp;
+
+    err = esp_partition_read(part, BPB_TotSec16, &sectors_count_tmp_16, sizeof(sectors_count_tmp_16));
+    if (unlikely(err != ESP_OK)) {
+        ESP_LOGE(TAG, "esp_partition_read failed (0x%x)", err);
+        return RES_ERROR;
+    }
+    s_sectors_count[pdrv] = sectors_count_tmp_16;
+    // For FAT32, the number of sectors is stored in a different field
+    if (sectors_count_tmp_16 == 0){
+        err = esp_partition_read(part, BPB_TotSec32, &sectors_count_tmp_32, sizeof(sectors_count_tmp_32));
+        if (unlikely(err != ESP_OK)) {
+            ESP_LOGE(TAG, "esp_partition_read failed (0x%x)", err);
+            return RES_ERROR;
+        }
+        s_sectors_count[pdrv] = sectors_count_tmp_32;
+    }
+
+    s_initialized[pdrv] = true;
+    return STA_PROTECT;
 }
 
 DSTATUS ff_raw_status (BYTE pdrv)
 {
-    return 0;
+    DSTATUS status = STA_PROTECT;
+    if (!s_initialized[pdrv]) {
+        status |= STA_NOINIT | STA_NODISK;
+    }
+    return status;
 }
 
 DRESULT ff_raw_read (BYTE pdrv, BYTE *buff, DWORD sector, UINT count)
 {
     ESP_LOGV(TAG, "ff_raw_read - pdrv=%i, sector=%i, count=%in", (unsigned int)pdrv, (unsigned int)sector, (unsigned int)count);
-    const esp_partition_t* part = ff_raw_handles[pdrv];
+    const esp_partition_t* part = s_ff_raw_handles[pdrv];
     assert(part);
-    esp_err_t err = esp_partition_read(part, sector * SPI_FLASH_SEC_SIZE, buff, count * SPI_FLASH_SEC_SIZE);
+    esp_err_t err = esp_partition_read(part, sector * s_sector_size[pdrv], buff, count * s_sector_size[pdrv]);
     if (unlikely(err != ESP_OK)) {
         ESP_LOGE(TAG, "esp_partition_read failed (0x%x)", err);
         return RES_ERROR;
@@ -42,25 +83,24 @@ DRESULT ff_raw_read (BYTE pdrv, BYTE *buff, DWORD sector, UINT count)
     return RES_OK;
 }
 
-
 DRESULT ff_raw_write (BYTE pdrv, const BYTE *buff, DWORD sector, UINT count)
 {
-    return RES_ERROR;
+    return RES_WRPRT;
 }
 
 DRESULT ff_raw_ioctl (BYTE pdrv, BYTE cmd, void *buff)
 {
-    const esp_partition_t* part = ff_raw_handles[pdrv];
+    const esp_partition_t* part = s_ff_raw_handles[pdrv];
     ESP_LOGV(TAG, "ff_raw_ioctl: cmd=%in", cmd);
     assert(part);
     switch (cmd) {
         case CTRL_SYNC:
             return RES_OK;
         case GET_SECTOR_COUNT:
-            *((DWORD *) buff) = part->size / SPI_FLASH_SEC_SIZE;
+            *((DWORD *) buff) = s_sectors_count[pdrv];
             return RES_OK;
         case GET_SECTOR_SIZE:
-            *((WORD *) buff) = SPI_FLASH_SEC_SIZE;
+            *((WORD *) buff) = s_sector_size[pdrv];
             return RES_OK;
         case GET_BLOCK_SIZE:
             return RES_ERROR;
@@ -82,7 +122,7 @@ esp_err_t ff_diskio_register_raw_partition(BYTE pdrv, const esp_partition_t* par
         .ioctl = &ff_raw_ioctl
     };
     ff_diskio_register(pdrv, &raw_impl);
-    ff_raw_handles[pdrv] = part_handle;
+    s_ff_raw_handles[pdrv] = part_handle;
     return ESP_OK;
 
 }
@@ -91,7 +131,7 @@ esp_err_t ff_diskio_register_raw_partition(BYTE pdrv, const esp_partition_t* par
 BYTE ff_diskio_get_pdrv_raw(const esp_partition_t* part_handle)
 {
     for (int i = 0; i < FF_VOLUMES; i++) {
-        if (part_handle == ff_raw_handles[i]) {
+        if (part_handle == s_ff_raw_handles[i]) {
             return i;
         }
     }
diff --git a/tools/idf_py_actions/debug_ext.py b/tools/idf_py_actions/debug_ext.py
index 1140103f91..13c2c0397a 100644
--- a/tools/idf_py_actions/debug_ext.py
+++ b/tools/idf_py_actions/debug_ext.py
@@ -197,7 +197,7 @@ def action_extensions(base_actions: Dict, project_path: str) -> Dict:
             r.append('set confirm on')
             r.append('end')
             r.append('')
-            return os.linesep.join(r)
+            return '\n'.join(r)
         raise FatalError(f'{ESP_ROM_INFO_FILE} file not found. Please check IDF integrity.')
 
     def generate_gdbinit_files(gdb: str, gdbinit: Optional[str], project_desc: Dict[str, Any]) -> None: