Test who are you from ash 2 o. Testing the memory of a flash drive using the H2testw utility. Key Features and Functions

Good afternoon

I tried to find the Russian version of the h2testw program on the Internet, but it turned out that it does not physically exist. But on our portal you can download the English version and read detailed instructions in Russian. The program is quite simple, so it can be used without knowing English.

Update: Russian version added.

Download h2testw:

These files do not contain viruses or other malware, you can verify this on the VirusTotal scan results page ():

Instructions in Russian for the h2testw program:

1. Download and run the h2testw.exe file (link above).

2. First, select English, by default it is German and nothing is clear at all:

3. After that, click on the “Select target” button to select the disk (SD card, flash drive) to check:

5. Select a disk, SD card or flash drive:

6. Now click the "Write Verify" button and wait until the verification is completed:

The "Writing" and "Verifying" columns should contain the same number of megabytes (the entire size of the SD card or flash drive, if it was empty).

I recommend that you check all flash drives, SD cards and disks with this program after purchase, especially if you buy from China. Unfortunately, the level of fraud by the Chinese remains high. Very often they sell flash drives supposedly for 128 gigabytes, but in fact they are 4 or 8 gigabytes.

If you have any questions or require clarification, please

H2testw is a free utility for testing various types of media. With H2testw you can test not only your flash drives, but also SD cards and even drives – both hard and network drives.

Important Features

To scan correctly and obtain accurate information about the device, developers recommend testing only empty USB drives. If there is any information on a flash drive or disk, it is recommended to delete it and format the media itself. Of course, no one requires you to permanently delete the information stored there - if, for example, there is something important on a flash drive, simply copy the information to another location, and then format the removable drive.

About the testing process

H2testw will allow you to find out the real speed of reading and writing information, which may differ significantly from what the manufacturers indicate on the packaging. In addition, you can also determine the volume of the device being tested. The testing itself is divided into two stages. In the first, the utility will fill the scanned media to capacity with files to determine the write speed, and in the second, it will determine the read speed by “reading” the recorded information.

About practicality

The program does not require installation, so it can be stored both locally and on removable drives and launched at any time. To start scanning, you need to connect the required device to your computer and launch the software. After this, select the media that you will scan in the program window and specify its size. At the end of the test, H2testw will display all the results and show a list of errors, if any. Do not forget to delete files from the device that were written there by the utility, since it does not clear them on its own.

Briefly

• the program does not require installation on the system;
• supports any file systems;
• makes it possible to determine the speed of writing and reading data;
• performs additional search for errors in the operation of the device;
• allows you to independently select the scanned space;
• forces you to manually delete files from the utility that remain on the drive after scanning;
• translated into Russian by "enthusiasts".

H2testw is a small but very useful program for testing the “quality” and speed characteristics of any type of flash drive. The essence of the H2testw program is that it can write a test file to the flash drive you specify and then read it. This records the writing and reading speeds from this drive. In addition, if data loss or errors are detected during the writing or reading process, the program will notify you about it. This utility can provide information about how large the drive is being tested, how many MB of them are damaged and how many are in working condition. I will write about the algorithm itself below, and also give a transcript of the test results.

How to work with the English version of the program:

1. Download the archive and run the file h2testw.exe, after which we select the language “English” (or “Russian” if you downloaded the Russian version, but more on that later).
2. Next, select the disk to be tested “ Select target" and go to the point " Data volume».
3. Here we select “ all available space" - to test the entire drive or " endless veryfy" and indicates the size of the file to be written in order to partially test the drive.
4. Next, click “ Write+Verify" to run the write and read test, and if the flash drive has already been tested and there is a file on it, then only " Verify", which will perform a read operation and check the integrity of the previously written file.
5. Next, an information window appears, in which we see general information about the desire to test the drive. We are shown the average write/read speed, time until the end of the operation, and the overall progress bar.

At the end of the operation, we can get results like this:

Test finished without errors.

You can now delete the test files *.h2w or verify them again.

Writing speed: 5.05 MByte/s

Reading speed: 11.4 MByte/s

Bad test result:

1.8 GByte OK (3954734 sectors)

5.8 GByte DATA LOST (12240850 sectors)

Details:2.9 GByte overwritten (6240208 sectors)

0 KByte slightly changed (2.8 GByte corrupted (6000642 sectors)

8 KByte aliased memory (16 sectors)

First error at offset: 0?0000000000003830

Expected: 0?358d089906064530

Found: 0?158d089906064530

H2test version 1.3

Writing speed: 2.53 MByte/s

Reading speed: 6.51 MByte/s

Now we see that when testing an 8 GB drive, errors were found; of this volume, only 1.8 GB (1.8 GByte OK) is available for normal recording, and the remaining 5.8 GB (5.8 GByte DATA LOST) cannot be used, since memory is damaged. Average speed for a given storage medium = 2.53 MByte/s, average read speed = 6.51 MByte/s

Another bad test result:

The media is likely to be defective.

0 KByte OK (0 sectors)

3.8 GByte DATA LOST (8030208 sectors)

Details:327.7 MByte overwritten (671296 sectors)

0 KByte slightly changed (< 8 bit/sector, 0 sectors)

3.5 GByte corrupted (7358912 sectors)

× Close

H2testw is a free portable utility for testing various USB media (flash drives and devices using flash memory; SD, MicroSD, XD memory cards), as well as hard and network drives. Excellent for detecting tampered and counterfeit storage devices.

As a result of this test, the user can determine the real read and write speed, as well as the true capacity of the storage device being tested.

The H2testw interface consists of one small window in which you can select the program language, specify the device and the amount of data to be tested on it. Testing can be started either by recording data or by recording and checking this record.

To fully test a storage device, it is recommended to test the entire available space. It should be taken into account that for such a check the device must be formatted and all information on it will be destroyed. If you test only part of the drive, the data will be saved on it, but the filled part will not be tested.

After selecting the testing purpose and verification mode, the tested volume is filled with data, the size and quantity of which the utility selects depending on the type of storage medium. This fixes the recording speed. At the second stage of testing, the recorded information is read, the data reading speed is measured, and the read data is compared with the original.

After the test is completed, H2testw will provide a result in the form of a conclusion about the performance of the memory, the speed of writing and reading from it, the number of unread sectors, etc., which can be copied to the clipboard.

Advantages of H2testw

• Qualitative testing of the writing and reading speed of various storage devices.
• Checking the actual capacity of memory cards, flash drives, flash memory devices, etc.
• Small size and portability of the program.
• Simple and intuitive interface.

Disadvantages of H2testw

• Possibility of data loss in case of unforeseen circumstances.
• The need to format the storage device to fully test it.
• Limited settings.

Conclusion

H2testw is certainly a useful and easy-to-use utility for testing almost any type of storage device. It is suitable for anyone who wants to test a memory card, flash memory, hard drive for writing and reading speed, bad sectors and device capacity.

Installing H2testw for Windows

Download the required version of the utility (there is a version with Russian language). Launch the program, select the interface language and use it. No installation required - the program is completely portable.

The free utility H2testw 1.4 does not require installation - it is designed for testing USB storage devices (flash drives, flash memory in a media player, any devices using flash memory, SD, XD memory cards, etc.) - it can also be used for testing hard drives and even online.
More details can be found on the website H2testw 1.4 – Gold Standard In Detecting USB Counterfeit Drives.
You can download H2testw 1.4 for free from the link: http://www.heise.de/ct/Redaktion/bo/downloads/h2testw_1.4.zip (213 KB).
The ZIP archive contains three files:

• h2testw.exe– testing utility H2testw 1.4;
• liesmich.txt- description in German;
• readme.txt– description in English.

You can test a flash drive with the existing information, but the filled area will not be overwritten - files and boot sectors will be saved during testing. But in this case, the occupied part of the flash drive will not be tested in recording mode.
At the same time, the author does not guarantee complete preservation of information on the medium as a result of unforeseen circumstances. In the description, for complete testing, it is recommended to save the files on the flash drive and format the flash drive before testing.

The flash memory testing process itself can be divided into 2 stages:

• Filling the entire free space of the tested disk with information (files, the size and number of files is selected by the H2testw utility itself depending on the free space of the disk being tested), while the actual writing speed is measured.
• Reading the recorded information from the disk under test, while measuring the actual reading speed and the reliability of the information, i.e. We check with the information that was previously offered for recording.

This test allows you to determine:

• Real speed of reading/writing information of the tested flash memory.
• The true volume of the storage medium being checked.

In order to perform a memory test, you need to complete the following steps:

1) connect a flash drive or a device with built-in flash memory, or a hard drive accessible to the computer.
2) make sure (as noted above) that there are no files on the disk under test. If there is any information on the disk under test, then it must be temporarily transferred to another disk.
3) download the Russian version of the utility h2testw you can, for example, .
4) run the utility (running with administrator rights is not required).
5) set the utility settings.

Picture 1

Main menu of the utility H2testw:
“Deutsch” or “English” – select a language convenient for you, for example, English.
In the Target field:
“Select target” – select the device being tested (you can select any logical drive of the computer).
“Refresh” – you can update the program data if the disk has already been tested before and there are still files with test results on this disk.
In the "Data volume" field:
Select “all available space” – we test the entire volume of the flash drive (you can enable the “only” option to set part of the volume).
“endless veryfy” – do not mark it (otherwise the test will be repeated endlessly).

6) to start the test, press the “Write+Verify” button (the “Verify” button is active when there is a record of the previous test - you can run the reading test).
After start, the utility window will display information about the progress of the testing process:

Figure 2

h2testw testing process
- information about the current speed of writing/reading information
- information about the remaining time until the end of testing
- graphic indicator of the verification process
- during the verification process, the text field is filled with information about the test results
7) at the end of the tests, we can get the following results:

Figure 3

A positive test result is the message: Testfinishedwithouterrors ( The test completed without errors).
An example of a utility testing resultH2testw
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 3.04 MByte/s
Reading speed: 14.3 MByte/s
H2testw v1.4
As you can see from the results, the test was successful. Average disk write speed = 3.04 MByte/s, average read speed = 14.3 MByte/s.

ANDmoreoneoption:

1.8 GByte OK (3954734 sectors)
5.8 GByte DATA LOST (12240850 sectors)
Details:2.9 GByte overwritten (6240208 sectors)
0 KByte slightly changed (2.8 GByte corrupted (6000642 sectors)
8 KByte aliased memory (16 sectors)
First error at offset: 0?0000000000003830
Expected: 0?358d089906064530
Found: 0?158d089906064530
H2test version 1.3
Writing speed: 1.58 MByte/s
Reading speed: 5.56 MByte/s
H2testw v1.4
And in this case, we tested memory with a declared capacity of 8GB, but only 2 GB (1.8 GByte OK) is available for normal use, the remaining 6GB (5.8 GByte DATA LOST) cannot be used. Average speed for this storage medium = 1.58 MByte/s, average read speed = 5.56 MByte/s

I addmoreinformation:
The media is likely to be defective.
0 KByte OK (0 sectors)
3.8 GByte DATA LOST (8030208 sectors)
Details:327.7 MByte overwritten (671296 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
3.5 GByte corrupted (7358912 sectors)
327.7 MByte aliased memory (671296 sectors)
First error at offset: 0x00000000000000000
Expected: 0x0000000000000000
Found: 0x000000000ffff000
H2test version 1.3
Writing speed: 2.09 MByte/s
Reading speed: 0.98 MByte/s
H2testw v1.4
In this case, we tested the micro SD flash card that came with the player. As can be seen from the test result, the card is not suitable for normal use at all.
Upon completion of the tests, you can press the button OK close a window H2testw/Progress and then by clicking on the cross in the upper right corner of the main window H2testw, - close the utility itself.
In conclusion, to satisfy your curiosity, I present a picture that shows screenshots of the properties of the tested flash drive, the recorded file against the background of an open flash drive window in My Computer.

Figure 4

From the above screenshot you can see that one file of 960 MB in size with a .h2w extension was written to the flash drive. Can be written to a larger disk (flash drive) using the utility H2testw many similar files of varying sizes. At the end of testing, delete all these files.