costume pearl jewelry wholesale What is the hard disk method of BT?

wholesale jewelry findings usa [Teaching] Fear of BT downloads will damage the hard disk, please enter

[Share] Is there a software disk for BT to check the hard disk situation of the hard disk n Check the hard disk situation.
The capacity of the hard disk is getting larger and higher, and the speed is getting higher and higher, but except for the hard disk of the SCSI interface, almost all desktop hard disks have shrunk by 1 year. Can you understand the health status and life of the hard disk in time to prevent the important data of losses? Drive Health can help you easily do this.
. The basic situation of Drive Health

Drive health is a hard disk surveillance software that can be used under system platforms such as Windows 9X/ME/NT/2000/XP. We can use it to use it. It predicts the errors that may occur in the hard disk, and judge the "fire of life" of the hard disk in time how long it can be burned in order to back up the data. Essence The latest version is 2.0, the file size is 552KB,
. The use of software

1. View the available life of the hard disk

A green progress bar, the length of the progress bar represents the available life of the hard disk. If the progress bar is full of the whole line, it shows that your hard disk life is good. If the progress bar has been moved to the left side, it means that the life span is decreasing; the more the left, the shorter the available life span.

2. View the states of each indicator of the hard disk

Drive health will automatically detect the health status of the current hard disk and display it in the list of the main window. The Rawread Error Rate, Spin Up Time and other projects are provided here. The most important thing for us is the value displayed below the "STATUS" column. Below I briefly introduce the meaning of each value:

OK: Good situation

attribute change: a certain feature is changed

dangerous chans: danger

pre T.E.C warning: Warning

If the value is "OK", that is, "√" before "", it means that everything is normal and you don't need to worry; If the value is "Dangerous Changes" or "Pre.e.c Warning", that is, "!" Is displayed in front of "", then you need to be cautious. However, if it is displayed as "unlock it!", It means that your hard disk may not support or did not activate the function.

3. Save the results of the hard disk detection

The "Save Report → TextFile" item under the "Drive" menu can save the current detection results into the text file. In addition, in the "Common Drive Settings" window, you can monitor the error level that may occur in the hard disk, and the detection frequency can be set.

. View hard disk information

"showdisk" item under the "view" menu. We can check the relevant information of the hard disk on the right side of the window. Similar to hardware detection tools. From here, we can learn about the manufacturers, models, product serial numbers, Fireware version, block size, total capacity, current number of sector, total number of sectors, magnetic tracts, magnetic heads, etc. You can check the Ultra DMAT as the hard disk and check whether the hard disk supports the temperature control settings. If the temperature control is supported, the temperature of the current hard disk will be displayed in Drive.

Mrive health occupied very little system resources. We can add it to a back -end service operation of the "startup" group as a background service for the X system, so that you can get warnings in time when the hard disk is problematic. Winning valuable time for the preservation of important information

[Teaching] Fear of BT downloads will damage the hard disk, please enter
[Must -read] Let the pseudo -scientific see it Whether the damage hard disk and Flashget really hurt the hard disk V5 version
In advance, I just mention the Flashget here, and I did not mention ED and FTP
because their principles are the same, I am too lazy to be too lazy to be too lazy Just typing

. I emphasized
It I just mentioned Flashget
but the principle of ED and FTP

Pet a quoting someone's words

Why do you frequently read and write hard disks?
Magnetic head life is limited. Frequent reading and writing will accelerate the wear of the magnetic head arm and magnetic head motor. Frequent reading and writing disks will increase the temperature in the area, which will affect the stability of the magnetic media in the area. It will also be directed to read and write errors. High temperature will also make the region closer to the magnetic head and dish surface due to heat swelling (under normal circumstances, there are only a few microns of the magnetic head and disc surface, which is closer?), And it will also be The data reading sensitivity that affects the film -type magnetic head will change the main frequency of the clock of the crystal oscillator, and it will also cause the hard disk circuit component to fail.
The task will also be guided until the IDE hard disk is damaged prematurely. Due to the deficiencies of the IDE hard disk itself, too many task requests will increase the failure rate of the search to the magnetic head. nMagnetic trails to re -search) Accelerate the wear of the magnetic head and the header motor.

. Let me talk about the working principle of modern hard disks
The current hard disk, whether it is IDE or SCSI, uses "Wen Che Ste" technology, has the following characteristics: 1. Magnetic heads, plates and sports agencies are sealed. 2. The surface of the plating plate with a high -speed rotation is smooth and smooth. 3. The magnetic head moves the plates in the diameter. 4. The magnetic head -to -plate contact start -stop, but the flight state is not directly contacting the plate during work.
The tablet: Hard disk tablet is attached to the surface of the disk on the surface of the disk of aluminum alloy (new material is also used). These magnetic powder is divided into several concentric circles called magnetic tract, in every concentric circle The magnetic tract seems to have countless arbitrarily arranged small magnets, which represent the state of 0 and 1, respectively. When these small magnets are affected by the magnetic force from the magnetic head, the direction of their arrangement will change. Use the magnetic head to control some small magnet directions specified, so that each small magnet can be used to store information.
The disc body: The plate body of the hard disk consists of multiple discs. These plates overlap in a sealed box. They rotate at a very high speed driven by the main axis motor. It reaches 3600, 4500, 5400, 7200 or even above.
Magnetic head: The magnetic head of the hard disk is used to read or modify the state of the magnetic substance on the plate. Generally speaking, each magnetic surface will have a magnetic head, starting from the top, starting from 0. When the magnetic head stops working, it is in contact with the disk, but it is flying at work. The magnetic head adopts the contact start -stop method of the landing area of ​​the plate. No data is stored in the landing area. The magnetic head starts and stop in this area without any data. When reading the data, the plate is rotated at a high speed. Due to the exquisite air dynamics design of the magnetic head movement, the magnetic head is in the "flight status" of the 0.2 --- 0.5 micrometer height of the data area of ​​the disk surface. Neither contact with the surface of the surface, it can be reliably read data.
motor: The motors in the hard disk are brushless motors. The mechanical wear is very small under high -speed bearings and can work continuously for a long time. The high -speed rotating disk has a obvious gyro effect, so the hard disk at the work should not exercise, otherwise it will increase the work load of the bearings. The search for the hard disk magnetic head is mostly a sound rotation or a straight -line motion to step into the motor. The magnetic trail of the disk is accurately tracked under the adjustment of the feed suit. Be careful.

The principle, everyone understands here, right?
First of all, there will be no contact with the magnetic head and the data area, so there is no wear problem.
Secondly, as soon as the hard disk is turned on, the rotation of the spindle motor can reach 4500 or 7200 rpm every minute. This has nothing to do with whether you use Flashget or ED. The wear has nothing to do with software.
again, the movement of the magnetic head under the control of the motor is moved back and forth on the left and right, and the amplitude is very small. It starts from the innermost layer of the plate (landing area), slowly moves to the outer layer, and then slow down. Move slowly, one magnetic trail and another magnetic trail to find data. There will be no large -scale jump (not frogs). So its wear can also be ignored.
So how does heat come from?
The first is the rotation of the spindle motor and the search feed motor. The temperature of the hard disk is mainly due to this.
Secondly, the friction between the high -speed rotating plate and the air. This is also the main factor.
The read and write of the hard disk? Intersection Intersection
is a pity that its heat can be ignored! Intersection Intersection Intersection Intersection Intersection Intersection Intersection Intersection Intersection
The read operation of the hard disk is that the change of the magnetic field on the plate affects the resistance value of the magnetic head. During this process, the plate will not be heated. The magnetic head is caused by the changes in the current, so there will be a little calorie. What about writing operations? Just in turn, the current strength of the magnetic head is constantly changing, which affects the magnetic field on the plate. This process is large because the electromagnetic induction is used, so the magnetic hair is greater. However, the plate itself will not be hot, because the permanent magnet on the plate is cold, and it will not heat up due to the change of magnetic field.
But in general, the heat of the magnetic head is compared with the two in front.
The calories can be transmitted, so will the permanent magnet body on the plate be harmful? In fact, the damage is very small. The temperature of the permanent magnet demagnetization is much higher than the temperature generated under the normal situation of the hard disk. Of course, if your case is not good for heat dissipation, it will not blame others.
I have to talk about a few mistakes here:
. High temperature affects the resistance sensitivity of the magnetic head, so it will cause reading and writing errors, which has nothing to do with permanent magnets.
. The so -called thermal expansion will not shorten the distance between the plate and the magnetic head, because the flying of the magnetic head is the principle of air dynamics, and it always keeps a certain distance from the plate under normal circumstances. Of course, if you hit the hard disk vigorously, then this vibration. Essence Essence Essence Essence
three. The so -called search means that the hard disk moves from the initial position to the specified magnetic trail. The so -called resetting action does not often happen. Because the physical location of the magnetic tract is stored in CMOS, the hard disk does not need to move back to 0 magnetic tract and then start again. As long as the magnetic head starts, the so -called reset action is completed. Unless you restart your computer, the reset will not happen again.
four. The disk structure of the IDE hard disk and the SCSI hard disk is similar. It is just that the interface bandwidth of the SCSI hard disk is larger than the IDE hard disk of the same age, and often the SCSI card often has a CPU -like thing to slow down the main CPU occupation rate. That's it, so Seagate will use its SCSI hard disk technology on the IDE hard disk.
five. The reading and writing of the hard disk is based on the sector of the column surface. The column surface is also the same magnetic trail with the same radius of all magnetic noodles in the entire disc, and divides each magnetic tract into several areas is the so -called sector. The writing operation of the hard disk is to write a sector first, and then write the next sector with the same column. Before a column is completely full, the magnetic head will not move to other magnetic tracts. Therefore, the storage of the file on the hard disk is not as the ordinary people think that it is continuously stored together (from the user's point of view, but from the bottom level of the operating system, its storage is not continuous). So Flashget or ED has more threads. The search of the magnetic head is generally not bigger than you listen to the song while playing games. Of course, this situation is just downloaded or uploaded, but in the process, who can guarantee that you will not start other software that needs to read and write hard disks? Maybe many people like to download games or listen to songs while downloading or listening to songs? Not to mention that Windows itself needs to read and write virtual memory files frequently. Therefore, it is good to download with FG or ED. The torture of the hard disk is not too powerful than the time.
six. Besides why Flashget is not good to open too many threads and why ED reads and write frequently. First of all, when there are more threads, the CPU's occupation rate is high, and the page changing action is frequent, so that virtual memory reads and write frequently. As for why, those who have learned the principles of the operating system should know that I will not say it here. What about ED? At the same time, download a file from several people, and several people are downloading your files at the same time, which is similar to FG opening multiple threads. So the hard disk light flashed. However, the current hard disk has a cache. The data is not written on the hard disk immediately, but it is stored in the cache first, and then it is written into the hard disk again when it is once again. No matter how well set it in FG, it is actually written in the cache. However, this process also requires CPU intervention, so the setting time is too short, and the CPU occupation rate is high, so the hard disk lights are still flashing because the virtual file is reading and writing.
seven. The hard disk reads and write frequently, and the magnetic head arm moves frequently by driving the servo motor, but it is not large for mechanical consumption. Unless your hard disk itself has mechanical failure such as force arm deformation (the most common fault in parallel imports). The real loss lies in the magnetic head, and the changing current will cause its aging, but compared with its life expectancy. Essence Essence Essence Essence It should also be within a reasonable range. Unless it is vibrated, the magnetic head hit the plate body.
eight. The most serious affected by high temperature is the mechanical circuit, especially the circuit board outside the hard disk. The integrated block above will accelerate aging at high temperature. Therefore, although IBM's glass hard disk, although there is a bad sector, it will disappear as soon as they use a software. No matter how serious it is, it is normal to change the line board. This is the reason.

has so tired of playing so many words.
In short, the hard disk will affect life due to poor environment and improper maintenance, but this is definitely not a software fault.
flashget, either ED, or FTP. Although they are frequent reading and writing of hard disks, they are not more harmful to hard disks. The so -called damage can be ignored. Do n’t worry about seeing the hard disk lights, so I worry about it. Otherwise, those servers that provide Web services and FTP services, their hard disk reads and write a lot, but it is not a common game. The hard disk of the software is comparable.
has a parameter of the hard disk called continuous no failure time. It refers to the longest period of the hard disk running from the beginning to the failure, the unit is hours, and the English abbreviation is MTBF. The MTBF of the general hard disk is at least 30,000 or 40,000 hours. The specific situation can look at the parameter description of the hard disk manufacturer. There is no failure time in a row. You can remove it yourself and see how many years. Then everyone thinks about how long the hardships work for the longest continuous work.
The machine I have used has been turned on for a year in a row. Except for a few shutdings of the dust in the middle of the way to clean up the dust, I have never stopped (using gold to 60G). In addition, there are three servers using SCSI hard disks, which have not stopped for two consecutive years. The heat disk heat disk is by no means comparable IDE hard disk (10,000 rotation hard disks).
In this regard, I think I have a say.

. Finally add several points:
. It is best not to buy parallel imports or repairs. The parallel imports are very unsafe during transportation. Although it seems unmotislably on the surface, it may cause damage to the mechanical body due to various factors during transportation. It is even more needed to return to repair. Honestly, those who complain about the hard disk are prone to damage, you should look at it yourself, whether your hard disk is these goods.
. The working environment of the hard disk needs to be neat, especially not to use the hard disk in a frequent power off -power off -power and dust environment. The chassis should be cleaned every one or two months.
three. The machinery of the hard disk is most afraid of vibration and high temperature. Therefore, the environment should be good, especially the chassis should be firm, so as not to be too large. Don't shake the computer table.
four. Frequent hard disk fragments should be sorted out. There is a misunderstanding of most people here. Most people think that hard disk fragments will increase hard disk consumption. In fact, this is not the case. The increase in hard disk fragmentation itself will only make the hard disk read and write more time than the time when the pieces are less. The operating system is Unix, but there is no disk fragmentation software under UNIX. Even Microsoft's NT4 itself is not available). However, due to the frequent movement of the magnetic head, the time of reading and writing is increased, so the CPU's page changing action is frequent, which causes virtual files (in fact to be accurate here is the page change file). The load of magnetic head search. This is the disadvantage of hard disk fragments.
five. Try to avoid sudden power when reading and writing, starting and doing other things that increase the CPU load (such as listening to songs when playing games, or playing large 3D games when downloading). Big. I won't say the reason, typing is too tired.

[Original] Personal views on BT and other various download forms
Copyright statement: You can reprint casually without notifying me, but please do not modify the content.
(Personal point of view, for reference only, if there are similar, it is purely coincidental)
The questions such as "where can XX be downloaded" on the network BBS, but these problems are often no one Can answer. why? Because it is really difficult to answer. Generally speaking, things that are easy to download, such as small shared software, or things such as DEMO issued by some manufacturers, everyone will not "kneel", "crying", "lying on demand" everywhere "," Seeking "and so on, asking for people, because these things can be seen everywhere; and the larger commercial software, or various types of anime, film and television, games, etc., are not so easy to find. The younger brother is 6 years old, and has almost used various download methods. He claiming that it is not downloading "Da Nian" and it is a madman. Here, my younger brother is willing to write a little understanding of various download methods with his own meager knowledge, communicate with everyone, and hope that you will not hesitate to enlighten me.

First of all, let's list the download method I know:

1. HTTP download: download directly with the browser through the HTTP protocol. That is, downloading various files is the same as when you download the web file when you browse the web. They are downloaded from port 80 through the HTTP protocol.

If: It is very convenient for the downloader and can be passed on, and the HTTP protocol will not limit the speed, and generally does not limit the number of connections, so NetAnts, Flashget, this born Class multi -threaded download tool. Such download tools can download different parts of a file from the server at the same time, and then synthesize a file after downloading. In this way, when the network is unstable, the network bandwidth can be used to maximize the download speed.

Disadvantages: Unfortunately, the convenience of the downloader in the HTTP method is the nightmare on the server side. If a user uses download tools such as Netants, it is equivalent to connecting this server at the same time; if everyone uses multi -threaded tools, the server's resources will quickly exhaust and collapse. The server will not sit like this and wait for "dead", so there is almost no server daring to use HTTP to provide large files to download, resulting in software heroes such as NetAnts useless. Essence In addition, the HTTP protocol is actually not suitable for large file transmission, because for the server, its management ability is too poor (such as difficulty to perform password authentication, difficult to limit speed, limit IP, limit number, etc.). The design of the HTML file is suitable for sending a large number of small files, and HTML is a small file, which is a maximum of a few MIDI and the like.

2. FTP download: download the file download through FTP (file transmission protocol). Generally speaking, users are recommended to use special software such as Cuteftp or Flashfxp to download FTP to download. Of course, you can also use IE to download FTP, but IE uses a login when browsing the directory, and a thread will be available when downloading files, so it will hit the wall on those websites limited by single threads. Moreover Not as convenient as professional software.

advantage: For downloaders, fast and convenient, suitable for downloading large files. And for the server side, the management function is powerful, which can be limited to single threads, limited number of people, limited IP (can be sealed!), Password authentication, even limited time, limited download capacity, and so on. Therefore, most downloading websites now use the front desk ASP and other script programs anti -theft chain, and the background FTP server is provided to provide downloads. The typical feature is that the download link can only be left -clicking or right -click to click "Use the Internet Express Download", and the right -click "The target is stored separately" cannot be loaded.

Disadvantages: In this case, the convenience of managing server side will undoubtedly make users feel too much. For example, NetAnts is no longer useful, and no matter how slow the speed is, you dare not open a multi -thread (it will be blocked, 55555 ...). In addition, desperately irrigation to buy passwords, and even pay for the password to buy a password, and grab the server with a group of people, do you think it will be cool?

================================== =====
The above methods can be classified as one category. I don't know if there is a recognized official name. Corresponding to P2P (Person to Person), let's call it S2P (Server to Person). This method has a few fatal defects for downloaders. Here I will explain them one by one:

1. Business issues.
News with a little computer common sense should know that the application of the server is very high. A server requires that it can run uninterruptedly at 7 × 24 hours, and the stability requirements are very high. And to serve so many users, its performance requirements are also very strong. High performance and high stability will inevitably bring high costs. A server is tens of thousands of, not to mention that to really serve users, it also needs high bandwidth communication lines, and the rental or telecommunications hosting of commercial broadband lines is also very expensive. It will not really fall into the pie in the sky. From the crazy plunge of Nasdaq in the United States, it can be clearly seen that domestic Internet companies have to do their best to charge and make profits. Passed. Expect the commercial website to provide you with various good things for free? Why? Or is it to engage in "eyeball economy"? Impossible. The merchants are very savvy, without oil and water, and only pay for them, they will never do it. Do you expect your personal website to provide you with a download service? Even if these people are living Lei Feng, they have to survive. If the server and the Internet fee are not available, I think such people will only be less and less instead. Judging from the third point I will talk about, the less these websites, the greater the pressure. This is why there are fewer and fewer free download services on the public network, and websites such as movies, music, comics, and other websites have turned to seek fees. The current free and rich FTP is basically concentrated in China Education and Research Network (CERNET). These websites are opened using school resources to serve the teachers and students of the school; many of them are set up by college students themselves with their interest. The stability is very poor, and most of them will not exist for too long. College students are temporarily worried about food and clothing. Many of them are idealists. They are not afraid of making loses (mainly power consumption, hardware, energy consumption), and the network speed in the education network is fast enough. FTP's last paradise. Unfortunately, for various reasons (mainly two points in the back), FTPs in the education network generally only have IP services in the education network. No value.

2. Legal Issues.

It, no matter what, in this era, as long as you have money, you can get everything you need. However, you want to eat good things and don't want to pay. This "Overlord Meal" is not so easy to eat. Although the current piracy in China is still very rampant, after all, this thing is illegal. Those commercial websites generally do not dare to make piracy openly, so they want to download it for free business software, games, animation, music, film and television, etc. It is basically impossible. After the state joins the WTO, the intensity of cracking down on piracy will inevitably be further strengthened. Even many personal websites, now I do n’t dare to provide copyrights. One is that the space provider is strict, and the other is to say when to the online police to ask for a conversation. The reason why the FTP in the education network dare not open to the public network is to avoid trouble in this area. It can also be said to be used for "teaching research" on the education network. As for some h's games, anime and other stuff, let's not expect to be uploaded to the commercial website (unless it is a charging underground adult station), and no one dares to put these in the FTP in the education network (it will be sealed by the network managing seal IP), only FTP opened by some enthusiasts dare to put it quietly. (Of course, piracy is illegal and wrong, but this article does not intend to conduct in -depth discussion on piracy, so this problem is temporarily ignored)

3. technical problem.

If the first two problems are solved, you exhaust your hard work, and finally find the good Dongdong you want to download. Water, earn enough "X coins", or you can't hold back the temptation, pay for the "VIP" account of a website, can you finally download it comfortably? Unfortunately, waiting for you to climb the general turtle speed, the link that fails to fail, or "the user is full, please try it later". Why is this so? Don't blame the network management of the business, and don't scold the website as "J businessman". The reason why this happens is caused by the download method of S2P itself.

In this download method, each user must rely on the server to obtain data. The more users, the heavier the load of the server, and the slower the download speed of the user. The number of users that the server can withstand is limited, and it is impossible to increase infinitely. So there is such a phenomenon: the more popular a resource, the more difficult it is to download it to it. It is in line with the phrase "strange goods"^_^. The better a download server, the richer the resources inside, the greater the load, the more difficult you can go in, and it will become more and more difficult to download things from it. It is okay to make a profitable business website. Anyway, the more customers, the more profitability. They can have the strength and motivation to upgrade the equipment, add a server, increase the bandwidth, and so on. For non -profit free download institutions, Basically, I had to use the number of users to restrict the number of users, otherwise I had to watch my machine frequently collapse. Of course, if they are "Lei Feng", they can also use their own back to upgrade to expand their capacity. Therefore, there are various "anti -theft chains" and measures of various download sites. A enthusiast cannot dare to share the download resources he owns with his fellows, because the more people come to download, the slower the speed of his own, the more difficult it is to connect into this server. The provider of the server is also facing a dilemma. On the one hand, I hope that my website is more well -known, more people come, and on the other hand, there are too many people who want to come, so as not to support themselves. "A apple, I gave you, I gone, I gone." It was such a vicious circle.

================================== =============
Due to the above three main problems, it is doomed to be difficult now, and it will become more and more difficult. It will be downloaded freely by http or FTP. Various resources you want. So, what is our way out? Is the freedom and free world of heroes in the early Internet era ended? No, the power of the network lies in the tightly connecting people from all over the world. The power of the network is infinite, because the power of human be infinite. Netease's advertising word "The power of the net gathering people" can be said to be quite correct. P2P software is a powerful tool for "the power of net gathering people". From the early PP dots, NAPSTER, Reallink, to the popular "eDonkey" Edonkey, Emule, DC , of course, there are BT, all P2P software. Many of these software are open source software written by some individuals, and many people are constantly improving them. The general feature is that people do not need to ask for help. Everyone is a server, and everyone can download from others to other good resources. In this way, whether it is a business problem or a copyright issue, it is basically nothing. P2P software can also be divided into two categories.

The early P2P software is basically a single point -to -single point, such as PP dot, Reallink, DC and the like. That is to say, using these software, basically one person wants to download another person's resources, connects to the person's machine and start downloading. When this person's resources are very sought -after, the situation is similar to S2P. Everyone scrambles to establish a connection with this person, resulting in the speed of everyone. It is even worse than the S2P, because after all, personal machines are not a server, it is impossible to serve you for 7 × 24 hours, and the configuration is not high enough, the network is not fast enough, and it is difficult to guarantee everyone’s network connection. It is blocked by the firewall and the like. All in all, although this P2P software has solved the first two problems, the third problem can be said that not only failed to solve, but in a certain sense, it became worse. By the way, let's talk about the software of Reallink. I have to admit that the company doing this software is indeed very business -minded. The commercial taste of this software is really strong. Download anything from anyone, if that person is marked, you must have enough virtual currency to pay him to download. And the way you earn virtual currency is to share the price of your good things, or there is a way to buy virtual currencies for the development company of this software. (This means is almost comparable to the government's money to make money by printing money, great, great!) The consequence of this is that there are indeed many good resources in Reallink, because there are incentives! There are even advertisements. Please carry his things (of course, you need to pay for advertisements). In order to solicit business, the most common "hot -selling product" should be things like "NG's A film is waiting for you". Essence Because I couldn't stand this commercially cigarette smoke, I quickly invited this software out of the hard disk.

The software like eDonkey and BT, which belongs to another P2P method, that is, multiple points of more dispersed downloads. Specifically, you download a thing from a single server to download, but download it from a number of personal machines with this file at the same time and then combine it. It sounds similar to the multi -threaded download of Netants, but because it is not downloaded from a server alone, there is no conflict problem at all. In the same resource, the more people download, the faster the speed of everyone. This is a virtuous circle. Unlike the previous "A Apple, I give you, I have gone by myself." The situation here is "a knowledge, I teach? Br> Reference materials: 202.106.124.15/download/file1/tools/drive/. 0.30.zip

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