China DOS Union

I keep hearing things like boot sector, boot record, file allocation table (or file registry), FAT32 format, n... what formats are these talking about?
What are these things? What do they do?
Are these terms only about hard disks? Or what else do they mean?? Many thanks to all you big brothers for explaining!!

I don't have a ready-made article on hand, so I can only explain it roughly:

The boot sector refers to an area of the system disk. For example, drive C on a hard disk is the system disk, and this area stores the three important files for DOS startup, namely Io.sys, Msdos.sys, and Command.com. When the system starts, it first loads these files, which is the so-called system boot process. Because these three files must be stored in track zero of the disk, this disk area is called the boot sector. And the boot record is actually the data record stored in the boot sector.

The file allocation table is actually a storage format that people defined, just like if you have a blank sheet of paper with nothing written on it, if you want to record information on it effectively, you must first divide that blank paper into areas, that is, what is written here and what is written there; partitioning means just that. Note that the file allocation table is extremely important for the user's data. Once the file allocation table is damaged, the user's data is in trouble, because all the related information of all the files you saved is recorded in the file allocation table, so you can imagine how important the file allocation table is.

The registry refers to Windows' system database. It is for Windows. Inside it records related information about hardware and software. Its importance to Windows is no less than that of the file allocation table, that's what a system crash means.

Many thanks, big brother Hongse!!!!!!! I am extremely grateful!!
One more question: are the partition table and the file allocation table the same thing? And what is the master DOS boot record?
Also, I've never understood what CMOS is. Although I know it's very important, is it software or hardware? Sometimes it feels like software, sometimes it feels like hardware, and what is its relationship with BIOS? Thanks!!!!
My computer knowledge is really terrible~~~~~~`sigh~~`
I suspect my hard disk's boot record and allocation table were damaged. What should I do?
Also, is hard disk damage divided into physical damage and logical damage? What do those mean???
Many thanks, big brother Hongse!!!!!!!

The partition table is the record of how the hard disk is divided up. When a hard disk is first bought, it is like a blank sheet of paper, empty on it. If you want to use the hard disk properly, you have to divide it into several parts, and those areas are drives C, D, E, F. Of course, different people partition differently. Yours is the standard partitioning method, that is, dividing the hard disk into four parts: C, D, E, F. And the file allocation table and the partition table are basically the same thing.

The master DOS boot record is the data in the track zero area of your C drive. It determines the system startup. After the computer finishes the power-on self-test, it reads data from here, which is the so-called master DOS boot sector.

CMOS and BIOS are bundled together, you can understand them as the same thing. Because early CMOS and BIOS were separate, while now they have been merged, so there still hasn't been a unified name for them. That blue screen you enter when you boot up is CMOS and BIOS.

CMOS and BIOS are a chip on the motherboard. It controls the computer's basic input/output system and is extremely important to the system, like a country's transportation command system.

Your hard disk may have a logical error, meaning a virus rewrote the partition information. Logical damage means data errors; physical damage is damage caused by external force, and if serious, it can't be repaired.

Also, if you want to learn CMOS and BIOS settings, please click here:http://www.hongen.com/pc/newer/setup/jcsz/s0203.htm
If there are still any technical terms you don't understand, please look them up here:http://www.hongen.com/pc/os/index.htm

Kuangxiang, not bad. Hehe......

Many thanks, big brother Hongse!!! I am extremely grateful!!!!

“Your hard disk may have a logical error, meaning a virus rewrote the partition information. Logical damage means data errors; physical damage is damage caused by external force, and if serious, it can't be repaired.”

Then what should I do about it?? Big brother Hongse, help me think it over~ what tools would be needed and so on, what should I do?
I think my hard disk should be logically damaged, damaged by a virus.
When I used ndd to scan the hard disk, at 3% it couldn't read any further (the first time, when I used vformat to format it, it also got stuck at 3%. Of course now there's no way to format it anymore, it says it can't find drive C)

This hard disk partition table and file allocation table are not the same thing, don't listen to Kuangxiang talking nonsense.. The rest is reasonable enough, so let him answer this question for you too.......
Use spfdisk to go in and look at the hard disk's condition. If you can see drive C then delete it first, rebuild it, and then format it and it can be used. The above steps are all done inside spfdisk.........
But what version of ndd are you using??? And how exactly are you using it? If there isn't any mistake, then I'm afraid the hard disk's problem is not small......

I downloaded the ndd I used from the website.
After I ran it I just kept pressing Enter all the way. When it asked me to choose, I chose y, and then it started checking the hard disk. When it got to 3%, it couldn't read any further!

Is it Chinese?

It's English!!
At the A: drive prompt I typed ndd and then pressed Enter. The main ndd interface appeared, and then I just kept pressing Enter all the way (I think it should have been choosing the first option). When it asked me n or y, I chose y, and then ndd started checking the hard disk. When it got to 3%, it couldn't read any further. The hard disk light stayed on the whole time, but there was no response on the screen

There may be bad sectors that can't be repaired

Why can't they be repaired?? I never touched the hard disk, never bumped it, never dropped it, so it shouldn't have physical damage~~ sigh~
If that's really the case, what should I do?
I don't think it's that serious yet!! Master, big brother, please help me!!!

Physical damage? That's still hard to say....... But physical damage doesn't necessarily mean there had to be human-caused physical harm...
Hard disks are very delicate...
A sudden power outage while reading or writing data and things like that can also cause physical damage........
Use diskgen to have a look first. The others are all relatively too difficult for you.........

If I do a low-level format, will it be fixed?
If even a low-level format can't do anything, does that mean the hard disk is finished?
I heard about track 0 damage. If track 0 is damaged, does that mean even a low-level format is useless?