# -*- encoding: utf-8 -*-
"""
@File    :   disk_read.py   
@License :   (C)Copyright 2021-2023

@Modify Time      @Author    @Version    @Description
------------      -------    --------    -----------
2023/10/9 10:04   zart20      1.0         None
"""
import os

# 定义常量
SECTOR_SIZE = 512  # 扇区大小
BYTES_PER_LINE = 16  # 每行字节数
# MAX_SECTORS_TO_READ = 15927  # 要读取的最大扇区数量
MAX_SECTORS_TO_READ = 0
# 打开设备文件
drive_letter = "I:"  # 请替换为你要操作的磁盘
file_path = f"\\\\.\\{drive_letter}"  # 设备文件路径

try:
    with open(file_path, 'rb') as disk:
        sector_number = 0  # 起始扇区号
        byte_offset = 0  # 字节偏移量初始化
        sectors_read = 0  # 已读取的扇区数量

        while sectors_read <= MAX_SECTORS_TO_READ:
            # 读取扇区数据
            disk.seek(sector_number * SECTOR_SIZE)
            sector_data = disk.read(SECTOR_SIZE)

            # 输出扇区数据
            print(f"扇区号：{sector_number}")
            for i in range(0, len(sector_data), BYTES_PER_LINE):
                line_data = sector_data[i:i + BYTES_PER_LINE]
                print(f"{byte_offset + i:08X}:", end=" ")  # 输出字节偏移量（16进制）
                for byte in line_data:
                    print(f"{byte:02X}", end=" ")  # 输出每个字节的16进制表示

                print()  # 换行

            # 更新扇区号，读取下一个扇区
            sector_number += 1
            byte_offset += len(sector_data)  # 累加字节偏移量
            sectors_read += 1

except PermissionError:
    print("没有足够的权限来访问磁盘。请以管理员身份运行程序。")
except FileNotFoundError:
    print(f"找不到设备文件：{file_path}")
except Exception as e:
    print(f"发生错误：{e}")