H2testw is 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 specified, and then read it. In this case, the speed of writing and reading from this drive is recorded. In addition, if in the process of writing or reading data loss or errors are detected, the program will notify you of this. This utility can give information about the volume of the drive being tested, how many MB of them are damaged and how much is in working order. I will write about the operation algorithm itself below, as well as give a transcript to the test results.
How to work with the English-language versions of the program:
- Download the archive and run the file h2testw.exe, then select the language "English" (or "Russian" if you downloaded the Russian version, but more on that later).
- Next, select the tested disk “ Select target"And go to the item" Data volume».
- Here we choose “ all available space"- to test the entire drive or" endless veryfy”And indicates the size of the file to be written to test the drive partially.
- Next, click " Write + Verify"To start the test of writing and reading, 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.
- Next, an information window appears, in it we see general information about wanting to test the drive. We are shown the average write / read speed, the time until the end of the operation, and the overall progress bar.
At the end of the operation, we can get the following results:
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
H2testw version 1.3
Writing speed: 2.53 MByte / s
Reading speed: 6.51 MByte / s
Now we see that when testing a drive with a volume of 8 GB, 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 corrupted. 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)
H2testw is free utility for testing different types carriers. With H2testw you can test not only your flash drives, but also SD cards and even disks - both hard and networked.
Important features
For correct scanning and obtaining accurate information about the device, the 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 medium itself. Of course, no one asks you to permanently delete the information stored there - if, for example, there is something important on a USB flash drive, just 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 the one indicated by the manufacturers on the package. In addition, you can also define the scope of the device to be checked. The testing itself is divided into two stages. In the first case, the utility will fill the scanned medium with files to capacity 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 run at any time. To start scanning, connect the required device to the computer and launch the software. After that, select the medium to be scanned in the program window and specify its size. At the end of the test, H2testw will display all the results and display a list of errors, if any. Do not forget to delete the files written there by the utility from the device, as it does not clean them on its own.
Briefly
- the program does not require installation into the system;
- supports any file systems;
- makes it possible to determine the speed of writing and reading data;
- produces additional search 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 "enuziasts".
Good day!
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 that it is quite possible to use it without knowing the English language.
Update: added Russian version.
Download h2testw:
These files do not contain viruses and other malware, you can verify this on the page with the results of the VirusTotal () scan:
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 in order 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 for the verification to complete:
The columns "Writing" and "Verifing" must 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 are buying in China. Unfortunately, the level of Chinese fraud remains high. Very often they sell flash drives supposedly for 128 gigabytes, but in fact they are for 4 or 8 gigabytes.
If you have any questions or need clarification - please,
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H2testw is a free portable utility for testing various USB drives (flash drives and devices using flash memory; SD, MicroSD, XD memory cards), as well as hard and network drives... Great for detecting fake and fake storage media.
As a result of this test, the user can determine the real speed of reading and writing, as well as the true size of the tested storage device.
The H2testw interface consists of one small window where you can select the program language, specify the device and the amount of data to be tested on it. Testing can be started both with data recording and with recording and verification of this record.
For a complete test of the storage device, it is recommended that you test all available space. It should be borne in mind that for such a check, the device must be formatted and all information on it will be destroyed. If you test only a part of the drive, the data on it will be saved, but the filled part will not be tested.
After selecting the target of testing and the verification mode, the test volume is filled with data, the size and quantity of which the utility chooses depending on the type of information carrier. In this case, the recording speed is fixed. At the second stage of testing, the recorded information is read, the data read speed is measured, and the read data is checked against the original.
After the end of the test, H2testw will give a result in the form of a conclusion about the operability 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 check of the speed of writing and reading of various storage devices.
- Checking the true volume 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 a storage device to fully test it.
- Limited customization.
Conclusion
H2testw is definitely a useful and easy-to-use utility for testing virtually any type of storage device. It is suitable for everyone who wants to test a memory card, flash memory, HDD on the speed of writing and reading, bad sectors and the volume of the device.
Installing H2testw for Windows
Download the required version of the utility (there is a Russian version). Run the program, select the interface language and use. 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 network.
More details can be found on the H2testw 1.4 –Gold Standard In Detecting USB Counterfeit Drives website.
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).
V ZIP archive there are three files:
- h2testw.exe- utility for testing H2testw 1.4;
- liesmich.txt- description in German;
- readme.txt- description in English.
You can test a flash drive with the available 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 write mode.
At the same time, the author does not guarantee the complete preservation of information on the carrier as a result of unforeseen circumstances. In the description for full testing, it is recommended to save the files on the USB flash drive - format the USB flash drive before the test.
The process of testing flash memory 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 chosen by the H2testw utility itself depending on the free space of the tested disk), while the actual write speed is measured.
- Reading the recorded information from the tested disk, while measuring the actual reading speed, and the reliability of the information, i.e. check with the information that was previously offered for the record.
This test allows you to determine:
- Real speed of reading / writing information of the tested flash memory.
- The true volume of the checked information carrier.
In order to perform a memory test, you need to follow these steps:
1) connect a flash drive or a device with built-in flash memory, or computer accessible HDD.
2) make sure (as noted above) that there are no files on the tested disk. If there is any information on the tested disk, then it must be temporarily transferred to another disk.
3) download the Russian-language 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
Utility main menu H2testw:
"Deutsch" or "English" - choose a language convenient for you, for example, English.
In the Target field:
"Select target" - select the tested device (you can select any logical drive computer).
“Refresh” - you can update the program data, if the disk has already been tested, there are files with the 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 a part of the volume).
"endless veryfy" - do not mark (otherwise there will be an endless repetition of the test).
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 start the read test).
After the start, the utility window will display information about the progress of the testing process:
Picture 2
Testing process h2testw
- information about the current speed of writing / reading information
- information about the remaining time until the end of testing
- graphical 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 the test result by the utilityH2testw
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 write speed to disk = 3.04 MByte / s, average read speed = 14.3 MByte / s.
ANDyetoneoption:
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
H2testw 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 the declared volume 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 a given storage medium = 1.58 MByte / s, average read speed = 5.56 MByte / s
Addyetinformation:
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: 0x0000000000000000
Expected: 0x0000000000000000
Found: 0x000000000ffff000
H2testw 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 you can see from the test result, the card is generally not suitable for normal use.
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 right upper corner 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 in the background open window flash drives in My computer.
Figure 4
From the screenshot above, you can see that one file of 960 MB in size with the .h2w extension was written to the USB flash drive. On a larger disk (flash drive) can be written with the utility H2testw many similar files of various sizes. At the end of testing, delete all these files.
