program to find out what speed is my usb flash drive
There are enough of faux and counterfeit products around and the globe of computers is non exempt. In recent years ane area has go more prone to this than any other, and that is flash retentivity storage. Devices such as USB flash drives, SD/CF cards and fifty-fifty SSD drives have been affected by this problem. Counterfeit USB wink drives seem to be the most mutual though, there'south so many dissimilar types, capacities and speeds that it'due south easy to hide them among all the real products.
You may think this problem but affects places similar eBay but even Amazon and other legitimate retailers have been caught out as well. This is why it'south a expert idea to check any flash device you purchase is the product you lot paid for. Making sure the serial or code number on the stick is legitimate is i way, another is making certain the bulldoze is the size advertised because nigh fake drives have a lower real capacity than listed past using smaller and much cheaper retentivity chips. The drive may even be reported equally the correct size in windows.
Software developers are too aware of this and some take written tools to assist you place if a drive is smaller than yous wait and is therefore probable to be counterfeit. Hither nosotros take listed five for you lot to try that are designed to bank check for fake size drives.
ane. H2testw
For several years H2testw has been known equally the become-to tool for checking memory based flash drives to encounter if they are the right capacity. The problem is information technology was adult dorsum in 2008 when flash based media was smaller in size. A scan with H2testw can encounter several hours or even days on newer large capacity drives, particularly if they also have slow write speeds. However, it could be a toll worth paying.
The method used in H2testw is very slow but is still i of the most thorough and reliable ways to scan the drive for a simulated capacity. Information technology isn't a fully destructive test because it simply checks the free infinite on the drive, but the best manner is to use H2testw on a cleanly formatted device, that way it will be checked completely.
H2testw works past writing big 1GB files to the free space and then reading them back. If the read data isn't the same equally what was written, in that location's a possible issue. You can also select a custom corporeality of data to write which is useful if you lot suspect your bulldoze might be a specific capacity. For example, if you think the drive is only 4GB and not the total advertised 32GB, a exam can exist run on 6GB of information.
Afterward it'south done the software leaves the examination files on the media, you can delete them or verify them again. If you have the time and want a very thorough test, try H2testw. It defaults to High german language just you can easily alter it in the GUI.
Download H2testw
2. FakeFlashTest
The FakeFlashTest utility is from the developer of the RMPrepUSB multipurpose USB tool. 1 component of RMPrepUSB is a quick test to cheque your drive and its real capacity, this is an extended and enhanced version of that and is released as a standalone executable. Dissimilar some other like tools, FakeFlashTest is not that one-time so includes optimizations and methods meliorate suited for modern flash media.
FakeFlashTest tries to fix the chief issue with H2testw which is the long time information technology takes for the process to consummate on larger or slower flash drives. The kickoff exam yous can run is the same quick test found in RMPrepUSB itself. This writes and reads 512 bytes of data at set up intervals across the drive and so finishes in less fourth dimension. It starts at the end of the drive starting time and then should pick upwardly an undersized wink bulldoze pretty quickly.
The second examination is similar to H2testw and writes to the free space on the drive then reads it back to verify. The process has been optimized to hopefully complete the task much quicker than H2testw. The written files are read dorsum at intervals of 3GB, 5GB, 9GB and 17GB. It ways that if your fake drive really has a 4GB capacity, you should know afterward the 5GB read test and won't need to go any farther.
Do notation that the the quick test is destructive meaning annihilation on the drive volition exist overwritten, so make sure your files are backed up. The slower test is non meant to be destructive but tin can notwithstanding corrupt your files if they are on a bad area of the drive, then it'southward highly advisable to backup first either way.
Download FakeFlashTest
3. Wink Drive/Bill of fare Tester
Flash Bulldoze/Carte Tester is listed by its developer as a generic tool for testing flash drives or SD/CF cards but is especially useful for detecting counterfeit drives with fake capacity. Information technology works in a like way to H2testw past writing data to the device, reading it back so comparing the 2 for differences. Any errors indicate a problem with the drive.
To run a total test select your flash drive from the drop down and choose the test type "write, read and compare", and then starting time the examination. If you lot don't have the time to run a total test on a large or slow bulldoze, the data can be written to the drive now and compared afterward using the split examination types of Write and so Read. Flash Drive/Carte Tester officially comes as a setup installer simply considering information technology's but two files, we've zipped them up to create a portable version.
Download Flash Drive/Menu Tester | Flash Bulldoze/Card Tester Portable
4. Quick Disk Exam
This tool is made in Coffee and so it can run on other operating systems similar Mac and Linux equally well as Windows. It does obviously mean yous need Coffee installed on your system. To run Quick Disk Exam, you may have to right click on the .Jar file and select Open or Open with > "Java(TM) Java Platform Binary" as double click might non piece of work.
Click the location push at the top to select a drive. How much data you lot want to write is up to yous. For case, you can choose to 30% fill the drive or fill it with a specific corporeality of data. Alternatively, use the exit complimentary option to exercise the opposite. Fake drives are typically something like 2GB, 4GB, 8GB or 16GB so yous could first with a pct that volition cover some or all of those capacities.
Data already on the drive is not overwritten but new data is added to make full to the selected corporeality. A useful function is beingness able to cease the process while writing data to the drive, restart the program later and continue filling where it left off. For some obscure reason, the drop down chapters menus get upward to Yottabytes which you lot'll never need. For those that don't know, ane Yottabyte is 1 Trillion Terrabytes!
Download Quick Disk Test
5. ChipGenius
The programs listed higher up all work in the same way which is to physically write data onto the disk and and so read information technology back to see if the data is right or corrupt. ChipGenius is completely different and actually doesn't touch the data on the drive at all. Instead, information technology reads the information from the flash memory bit inside the bulldoze to see what it is and what it'south true capacity should be.
Run the program and look for the information nearly the flash chip inside your device, a line volition give the vendor and model number of the chip and hopefully its truthful capacity. If capacity is not shown, copy the other information on the line (Ctrl+C) and enter it into a search engine, which might offer some more than data. Right click in the window to copy all the shown information to the clipboard.
Annotation: Be aware that ChipGenius generates a number of false positives with online virus scanners similar VirusTotal. Don't download the program if this makes you uncomfortable.
Download ChipGenius (Russian site) Directly Download of ChipGenius (Password = usbdev.ru)
Terminal Notation: Apart from ChipGenius, all other tools write data to the drive. Whether the tests are meant to be destructive or not, it is highly recommended to fill-in anything still on the bulldoze. Data has been known to get destroyed when drives accept real errors on them or capacity issues.
parkinsonfromment.blogspot.com
Source: https://www.raymond.cc/blog/test-and-detect-fake-or-counterfeit-usb-flash-drives-bought-from-ebay-with-h2testw/