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中国DOS联盟论坛 » DOS学习入门 & 精彩文章 (教学室) » File All成Well,“FAT”在这里对应的常见释义是“File Allocation Table”,即文件分配表。 DigestI View 5,267 Replies 3
Original Poster Posted 2003-06-01 00:00 ·  中国 江西 吉安 电信
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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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◎ Origin: Central Songtao Station □bbs.ee.ncu.edu.tw From: power.cs.tku.edu.tw

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Floor 2 Posted 2009-08-29 09:03 ·  中国 广东 广州 天河区 电信
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Floor 3 Posted 2009-08-30 11:02 ·  中国 四川 成都 郫都区 电信
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Floor 4 Posted 2009-09-01 01:55 ·  中国 广东 东莞 电信
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