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硬盘FAT文件系统原理的详细分析
硬盘由很多盘片(platter)组成,每个盘片的每个面都有一个读写磁头。如果有N个盘片。
就有2N个面,对应2N个磁头...
硬盘FAT文件系统原理的详细分析
硬盘由很多盘片(platter)组成,每个盘片的每个面都有一个读写磁头。如果有N个盘片。
就有2N个面,对应2N个磁头(Heads),从0、1、2开始编号。每个盘片被划分成若干个同心圆磁道(逻辑上的,是不可见的。)每个盘片的划分规则通常是一样的。这样每个盘片的半径均为固定值R的同心圆再逻辑上形成了一个以电机主轴为轴的柱面(Cylinders),从外至里编号为0、1、2⋯ ⋯ 每个盘片上的每个磁道又被划分为几十个扇区(Sector),通常的容量是512byte,并按照一定规则编号为1、2、3⋯ ⋯ 形成Cylinders×Heads×Sector个扇区。这三个参数即是硬盘的物理参数。我们下面的很多实践需要深刻理解这三个参数的意义。
- 2022-09-14 15:55:03下载
- 积分:1
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回溯法实现的走迷宫方法,用MFC以图形的方式表达出来
回溯法实现的走迷宫方法,用MFC以图形的方式表达出来-Backtracking realize the Maze methods MFC graphical way to express
- 2022-12-25 04:15:03下载
- 积分:1
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计算机技术的第一次出现在美国的1…
One of the first occurrences of computer technology occurred in the USA in the 1880s. It
was due to the American Constitution demanding that a survey is undertaken every 10 years.
As the population in the USA increased, it took an increasing amount of time to produce the
statistics. By the 1880s, it looked likely that the 1880 survey would not be complete until
1890. To overcome this, Herman Hollerith (who worked for the Government) devised a machine
which accepted punch cards with information on them. These cards allowed a current
to pass through a hole when there was a hole present.
- 2022-02-20 02:14:45下载
- 积分:1
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经典C语言书籍,值得一看
经典C语言书籍,值得一看- The classics C language books, are worth as soon as looking
- 2023-01-01 13:35:04下载
- 积分:1
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本课件是《自动控制理论基础》这门课程本人多年教学经验的积累,有很高的参考实用价值,属于自动控制理论的精品教学课件。...
本课件是《自动控制理论基础》这门课程本人多年教学经验的积累,有很高的参考实用价值,属于自动控制理论的精品教学课件。-the courseware is "based automatic control theory" This course my years of teaching experience accumulation, a high reference value, automatic control theory is the quality courseware.
- 2022-01-25 20:12:34下载
- 积分:1
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redhatlinux9应用指南。
实例图解RedHatLinux9应用指南。-RedHatLinux9 Application Guide.
- 2022-03-14 08:44:37下载
- 积分:1
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javascript中文教程
javascript中文教程-javascript Chinese Guide
- 2022-09-12 22:35:03下载
- 积分:1
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MFC中使用动态规划算法来实现Strassen(界面)!
MFC下用动态规划法实现strassen算法(有界面)!-MFC using dynamic programming algorithm to achieve strassen (with interface)!
- 2022-09-13 02:00:03下载
- 积分:1
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C++编成数据结构与程序设计方法
D.S.Malk编著
C++编成数据结构与程序设计方法
D.S.Malk编著-into C data structures and procedures for design D. S. edited Malk
- 2022-05-06 01:09:00下载
- 积分:1
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C语言库函数大全,如果是C语言的初学者,建议不要碰他,还是高手级别的人看看吧。
C语言库函数大全,如果是C语言的初学者,建议不要碰他,还是高手级别的人看看吧。-C language library function Guinness, in the case of C language for beginners, it is recommended not to touch him, or masters-level people who look at it.
- 2022-10-04 00:25:03下载
- 积分:1