Why does the different partition 0:/ and 1:/ is working as same partition?

[gamingjam60]

I am using FatFS R-0.16 and using following function:

Code: Select all

void fatfs_test_2(int disk_no) {

    fatfs_clearing_partition_table(disk_no);
    
    int logical_drive_1 = 0;                      // First logical drive
    int partition_1 = 1;                          // First partition

    int logical_drive_2 = 1;                      // Second logical drive
    int partition_2 = 2;                          // Second partition

    VolToPart[logical_drive_1].pd = disk_no;      // Physical drive number
    VolToPart[logical_drive_1].pt = partition_1;  // Partition 1
    VolToPart[logical_drive_2].pd = disk_no;      // Physical drive number  
    VolToPart[logical_drive_2].pt = partition_2;  // Partition 2

    size_t buffer_size = 65536;  // 64KB
    BYTE* work = (BYTE*)kheap_alloc(buffer_size, ALLOCATE_DATA);        // 64K buffer
    if(!work) {
        printf("Failed to allocate %zu bytes for formatting buffer\n", buffer_size);
        return;
    }
    memset(work, 0, buffer_size); 

    // 256MB sectors for the 1st partition and the remaining for the 2nd partition
    uint64_t part_1_sectors = (100 * 1024 * 1024) / 512;

    LBA_t plist[] = {part_1_sectors, 100};      // 256MB sectors for the 1st partition and the remaining 60% for the 2nd partition and rest are unallocated

    int res = f_fdisk(disk_no, plist, work);    // Divide the physical drive 1

    if(res != FR_OK){      
        printf("FATFS: FDISK failed on physical drive %d with error %s\n", disk_no, fatfs_error_string(res));
        free(work);
        return;
    }
    printf("FATFS: FDISK succeeded on physical drive %d\n", disk_no);

    kheap_free(work, buffer_size);
    work = NULL;

    res = fatfs_mkfs(logical_drive_1, FM_FAT32);      // Create FAT volume on the logical drive 0
    if(res != FR_OK){      
        printf("FATFS: MKFS failed on logical drive 0 with error %s\n", fatfs_error_string(res));
        return;
    }


    res = fatfs_mkfs(logical_drive_2, FM_FAT32);        // Create FAT volume on the logical drive 1
    if(res != FR_OK){      
        printf("FATFS: MKFS failed on logical drive 1 with error %s\n", fatfs_error_string(res));
        return;
    }


    res = fatfs_mount(logical_drive_1);                  // mount logical drive 0
    if(res != FR_OK){      
        printf("FATFS: mounting failed on logical drive 0 with error %s\n", fatfs_error_string(res));
        return;
    }


    res = fatfs_mount(logical_drive_2);                    // mount logical drive 1
    if(res != FR_OK){      
        printf("FATFS: mounting failed on logical drive 1 with error %s\n", fatfs_error_string(res));
        return;
    }


    //-----------------------------------------------------------------------------------------------

    const char *msg0 = "This is FAT32 Partition 0";
    const char *msg1 = "This is FAT32 Partition 1";

    void *file0 = fatfs_open("0:/part0.txt", FA_CREATE_ALWAYS | FA_WRITE);
    void *file1 = fatfs_open("1:/part1.txt", FA_CREATE_ALWAYS | FA_WRITE);

    if (file0 && file1) {
        fatfs_write(file0, (char*)msg0, strlen(msg0));
        fatfs_write(file1, (char*)msg1, strlen(msg1));
        printf("Successfully wrote unique files to both partitions.\n");
    }

    fatfs_close(file0);
    fatfs_close(file1);

    printf("\n--- Listing 0: ---\n");
    fatfs_listdir("0:/");
    printf("\n--- Listing 1: ---\n");
    fatfs_listdir("1:/");

    fatfs_unmount(0);
    fatfs_unmount(1);
}

Output:

Code: Select all

FATFS: FDISK succeeded on physical drive 1
FATFS: MKFS succeeded on logical drive 0:
FATFS: MKFS succeeded on logical drive 1:
FATFS: Successfully mounted on drive 0
FATFS: Successfully mounted on drive 1
Successfully wrote unique files to both partitions.

--- Listing 0: ---
Listing directory: 0:/
       part0.txt  25 bytes
       part1.txt  25 bytes

--- Listing 1: ---
Listing directory: 1:/
       part0.txt  25 bytes
       part1.txt  25 bytes
  

[gamingjam60]

I have found solution I need to change logical drive to use other partition.