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DOS启动引导过程和备份MBR工具hdsect.exe中文版
使用 LLM 解释/回答一下
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MS－DOS7启动过程：通过 BIOS连接硬盘的 MBR，MBR引导IO. SYS，然后通过COMMAND加载MSDOS再加载CONFIG，最后运行AUTOEXEC。（如果有问题希望兄弟们说 一下）
2 HDSECT中文版
一, MBR是概念和作用:
MBR是英文Main Boot Recoad(主引导记录)的缩写，狭义的MBR是指位于硬盘的
0柱0面1扇区的前半部分的一小段程序，广义的MBR是指整个0柱0面1扇区的整个512
个字节，包括后半部分的HDPT(硬盘分区表)，本文指后者。
由于MBR是硬盘启动时第一个要访问程序,对于一个新买来的硬盘因为MBR全部都
是0,所以是不能启动的,这时我们需要用分区工具(如FDISK)来进行分区,分区的作用
有两个：1,自动写入标准的MBR，2,根据用户输入分区的容量写入HDPT(硬盘分区表)。
二, 备份/恢复MBR的重要意义:
MBR一旦被病毒或误操作等因素破坏，电脑将无法启动，所以要在MBR正常的情况
下做好备份。它只有512个字节，占用空间很小，所以本软件将MBR备份到硬盘隐藏扇
区(0柱0面52扇区)里，以便在需要时恢复。
三, 清除MBR的重要意义:
它把硬盘的0柱0面1扇区全部512个字符都用0填充,其作用是:
1,快速删除硬盘的已有分区(C盘,D盘……)
2,彻底消灭引导型病毒.
3,为下一步"分区"扫清障碍
Last edited by shanliang8008 on 2007-10-9 at 03:55 PM ]
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MS-DOS 7 Boot Process: Connect to the MBR of the hard disk through BIOS, the MBR boots IO.SYS, then load MSDOS through COMMAND, load CONFIG, and finally run AUTOEXEC. (If there is a problem, I hope brothers can say it.)
2 HDSECT Chinese Version
I. Concept and Function of MBR:
MBR is the abbreviation of Main Boot Record. The narrow sense of MBR refers to a small section of the program in the first half of the 0 cylinder, 0 head, 1 sector of the hard disk. The broad sense of MBR refers to the entire 512 bytes of the 0 cylinder, 0 head, 1 sector of the hard disk, including the HDPT (hard disk partition table) in the second half. This article refers to the latter.
Since the MBR is the first program to be accessed when the hard disk boots, for a newly bought hard disk, because the MBR is all 0, it cannot boot. At this time, we need to use a partition tool (such as FDISK) to partition. The functions of partitioning are two: 1. Automatically write the standard MBR, 2. Write the HDPT (hard disk partition table) according to the partition capacity entered by the user.
II. Important Significance of Backing Up/Restoring MBR:
Once the MBR is damaged by factors such as viruses or incorrect operations, the computer will not be able to boot. Therefore, it is necessary to make a backup when the MBR is normal. It only has 512 bytes and occupies a small space, so this software backs up the MBR to the hidden sector of the hard disk (0 cylinder, 0 head, 52 sector) for restoration when needed.
III. Important Significance of Clearing MBR:
It fills all 512 characters of the 0 cylinder, 0 head, 1 sector of the hard disk with 0. Its functions are:
1. Quickly delete the existing partitions (C drive, D drive...) of the hard disk
2. Completely eliminate boot viruses
3. Clear the obstacles for the next step of "partitioning"
Last edited by shanliang8008 on 2007-10-9 at 03:55 PM ]
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