在实际生活中常有对磁盘进行低格的操作,目的是彻底摧毁原始数据,防止被数据恢复.
这里介绍两个windows内置的工具,可以很好的完成这个工作

擦除磁盘

windows 内置的format 命令是支持 擦除0以及随机读写的

以下命令执行的目标功能

format d: /v:clean_ok /p:2 /y

• 首先利用随机数 覆盖磁盘 2 次
• 接着将磁盘D擦除为0
• 一共三次

• 擦除完成后 重命名分区名称为 clean_ok

  重命名分区是作为 完成的标致,可以不用

擦除可用空间

windows 的cipher 命令可以对当前磁盘中的未被使用的磁层空间进行加密

cipher /w:D:\

• 将磁盘D中所有未被占用的空间全部清空

该命令的操作逻辑如下:

1. 首先写入 00
2. 接着写入ff
3. 最后再写入00

In real life, it is common to underframe a disk in order to completely destroy the original data and prevent it from being recovered.
Here are two built-in windows tools that can do this job very well

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Erase disk

The windows built-in format command supports erase 0 and random read/write.

The following command performs the target function

format d: /v:clean_ok /p:2 /y

• first overwrite the disk 2 times using random numbers
• then erase disk D to 0
• three times in total

• rename the partition to clean_ok after the wipe is complete

  Rename the partition as the completion mark, you can leave it out

Erase free space

The windows cipher command encrypts the unused tier space on the current disk

cipher
cipher /w:D:\

• Empty all unused space on disk `D

The logic of this command is as follows:

1. first write to 00
2. then write ff 3.
3. finally write 00 again