How to verify CD and ISO files

After making the ISO, you can check the MD5, and then look down to see if there is this MD5 value on the Internet.

Message Digest Algorithm MD5 is a hash function widely used in the field of computer security to provide message integrity protection. The file number for this algorithm is RFC 1321 (, MIT Laboratory for Computer Science and RSA Data Security Inc april 1992）。

MD5 stands for Message-Digest Algorithm 5, which is used to ensure that information transmission is complete and consistent. It is one of the hash algorithms widely used by computers (also translated as summary algorithm and hash algorithm), and the mainstream programming language has been generally implemented in MD5. The calculation of data (such as Chinese characters) into another fixed-length value is the basic principle of the hash algorithm, and the predecessors of MD5 are MD2, MD3, and MD4.

The MD5 algorithm has the following characteristics:

1. Compressibility: For data of any length, the calculated MD5 value length is fixed.

2. Easy to calculate: It is easy to calculate the MD5 value from the original data.

3. Modification resistance: Any change to the original data, even if only 1 byte is modified, the md5 value obtained is very different.

4. Strong anti-collision: knowing the original data and its MD5 value, it is very difficult to find a data with the same MD5 value (i.e., falsified data).

Recorder and disc quality problems are generally rare.

I also use nero 7, which is generally inspected, not necessarily by software, and can be done manually:

After burning, put the burned disc back and see if you can open it to see what's inside?

I've tried, if the burning error is made, double-click on the driver, and it will pop up :g: error.

That is to say, the disc cannot be opened.

PS: No matter how bad the quality of the discs of today's recorders is, there will be no serious consequences.

The disc is bad, because of the number of times it is used (life), the good service life is longer, and the service life is shorter. That's all.

Since the landlord must want to verify: you can use this:

In the tool, there are operations such as making an image, verifying an image, etc. I usually use it when I burn images, because sometimes nero will crack down on piracy and cause image production failures, while floppy disks won't.

At the time of the carving, the evil took the choice of Nero's [ISO mirror], and it was absolutely the same.

Supplement] There's no better way.,I'm just carving the ISO mirror directly.,There's no problem yet.,If you're worried.,You can only try it after carving it.,......

Install a virtual machine vmware and you can test:

It is equivalent to installing a system in your system, and you can test the ISO file, go to the deep technical forum to take a look!

It is recommended that you select disc verification when burning. In the last step of the written data, the software automatically performs the check.

If there is a mirror on the disk, open it with an image.

And it's not easy, but if you have this CD on your computer, I have this display on my computer.

It's not slow, it's about the same time as you burn it.

Yes, genuine discs have packaging and have keys that are very slow to read.

ISO no packaging, no honeymoon, faster reading speed.

There is no difference. The genuine disc you bought is just the key you bought.

1. Prepare the disc and CD-ROM drive. Connect with a computer.

2. Open Nero Express and enter the operation interface.

3. Click the small arrow on the left to switch to Nero Burning Rom.

4. After a new window pops up, click Cancel directly to enter the console.

5. Click on the burner menu and select "Burn Image File".

7. After selecting the file, the "Burn Compilation" window pops up, and select "End Disc".

8. There may be no response here, don't worry, wait for a while the response disappears, click the burn below.

9. When the burning is finished, the system will automatically eject the optical drive, and the burning will be successful.

1. Here in the environment of windows7, use the disc burner master to burn the disc, open the software and find the option to burn the disc image:

3. Then make sure that your own optical drive supports the burning function and put the optical disc in the optical drive, and wait for the software to scan the available optical drive and available disc

5. Start burning, the burning progress will be displayed during the burning process, when the burning enters all turn blue, it means that the burning is completed

1 The computer is equipped with a burning disc drive (disc burner).

2 Install burning software, if you are using Windows system, you do not need to install external burning software, Windows system itself contains burning function.

3 Prepare a blank disc, the CD blank disc capacity is 700MB, *** the blank disc capacity is, choose according to the ISO file size.

4 When the above is ready, right-click on the ISO image file:

5 Click: Burn the disc image.

6 Tick in front of the verification disc (v) after burning, and finally click: Burn and burn the verification is completed, and the bin door will automatically pop up.

The ISO file itself is a disc image file, you can burn it directly, the general burning software can recognize the ISO file, if you can't recognize it, you can open the ISO file with a virtual drive, and then copy the file inside to burn.

Just engrave it directly with ones or nero.。。。 I just carved it the other day... But you have to check it before you engrave it.,In case you can't use it, the cup will be.。。。 The system can't do half of it...

Open the Nero burning software, select the burn disc file, select the location of the ISO file, and load the burn.

With Nero7, you can burn it directly to a disc, and it's easy to use.

It is recommended to burn with a USB flash drive, the effect is better and more practical. Share a safe and simple Windows 10 system USB flash drive production method, other system principles are the same.

How to make a system installation USB flash drive? Official genuine widows10 system installation U disk production tutorial.

Use UltraISO to create a disc file into ISO format.

1. First install an UltraLiso software, put the CD you want to install into the computer, then run UltraLiso, and open the files in the CD drive in UltraLiso.

2. Select all the files in the ultraliso open optical drive, and then move them to it.

4. Define the name of the file you want to save and the storage path of the file.

5. Click the save button, and the file in the disc has been made into an image file.

There's a software called Ultraiso that does just that. How to use it yourself to see help, Chinese, there is a crack.