『楼 主』:
名词解释--FAT
使用 LLM 解释/回答一下
发信人: bert.bbs@bbs.ee.ncu.edu.tw (哇哩咧...), 信区: DOS
标 题: Re: ☆★续..名词解释--FAT !?☆★
发信站: 中央大学松涛风情资讯站 (Tue Nov 14 03:08:29 1995)
转信站: SMTH!beijing3.net.edu.cn!news.uoregon.edu!cuhknntp!serv.HiNet.net!news.
>==>发信人: michell.bbs@bbs.ncia (迪恩.卡利尔), 信区: DOS
> 抱歉!我又来问问题了!
> △将硬碟档案结构包括 FAT 及 Partiton table 在硬碟中的架构,而且什麽叫
cluster,
> 也请从 sector.track.cylinder 等名词解释O
> 也是请各位再助我一臂之力吧!再一次谢谢你们的帮忙,THANKS!!
Partition table 是位於硬式磁碟的 cylinder 0/head 0/sector 1
的位置, 用途是指出硬碟内不同的作业系统所使用的区域. 记录的方
式是标示出所使用的区域之启始及结束的 cyl/head/sec 编号, 及其
所使用的 sector 总数. 每一份 partition table 只可容纳四个
partition 记录.
FAT 之位置在 dos partition 的 boot sector 之後, 即绝对 sector
1 开始. 其份数有两份, 正常下两份之内容应相同. fat 所占用的
sector 数因磁碟容量大小不同而不定, 在 boot sector 内有记录.
fat 以其指标所使用 bit 数不同而有 12 bits fat 及 16 bits fat
两种. 12 bits FAT 现多用於 floppy 上.
cluster 是某一数目的 sector 所合成的, 例如在 1.2 mb 的 floppy
上一个 cluster 为一个 sector. 第一个 cluster 可不存在, 其编号
由 2 开始. 位置为紧接 root directory 之後起算.
ps. track 和 cylinder 可算是相同的东西, 但在硬磁中多称 cylinder
在 floppy 中称 track.
> :
> 我决定好好地认识DOS,可不可以请各位推荐几本好书给我呢?
> THANKS!....
松岗有一本 dos 使用手册, 个人认为是相当好的一本.
另外, 有空多翻翻杂志, 可以学到不少.
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我是幽灵人口 ?!
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◎ Origin: 中央松涛站□bbs.ee.ncu.edu.tw From: power.cs.tku.edu.tw
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Sender: bert.bbs@bbs.ee.ncu.edu.tw (Wow,), Forum: DOS
Subject: Re: ☆★Continue..Noun Explanation--FAT!?☆★
Posted: Central University Songtao Style Information Station (Tue Nov 14 03:08:29 1995)
Forwarded: SMTH!beijing3.net.edu.cn!news.uoregon.edu!cuhknntp!serv.HiNet.net!news.
>==>Sender: michell.bbs@bbs.ncia (Dean Karr), Forum: DOS
> Sorry! I'm here to ask questions again!
> △Include the hard disk file structure including FAT and Partiton table in the hard disk structure, and what is cluster,
> Please also explain from terms like sector.track.cylinder O
> Also please help me again! Thank you again, THANKS!!
The Partition table is located at cylinder 0/head 0/sector 1 of the hard disk. Its purpose is to indicate the areas used by different operating systems in the hard disk. The recording method is to mark the start and end cyl/head/sec numbers of the used area and the total number of sectors used. Each partition table can only hold four partition records.
The location of FAT is after the boot sector of the dos partition, that is, starting from absolute sector 1. There are two copies, and normally the contents of the two copies should be the same. The number of sectors occupied by FAT varies depending on the disk capacity, and it is recorded in the boot sector. FAT has two types, 12 bits FAT and 16 bits FAT, depending on the number of bits used by its index. 12 bits FAT is mostly used on floppies now.
A cluster is composed of a certain number of sectors. For example, on a 1.2 mb floppy, one cluster is one sector. The first cluster may not exist, and its number starts from 2. The position starts from after the root directory.
ps. Track and cylinder can be considered the same thing, but in hard disks it is mostly called cylinder, and in floppies it is called track.
> :
> I decide to get to know DOS well, can you please recommend some good books to me?
> THANKS!....
There is a dos user manual published by Songgang, which I personally think is a very good one.
Also, flipping through magazines from time to time can learn a lot.
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I am a ghost population ?!
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◎ Origin: Central Songtao Station □bbs.ee.ncu.edu.tw From: power.cs.tku.edu.tw
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