How to test if the flash drive is original or not? (Flash drive - USB hard drive - SD memory card)
You may buy a new flash drive or external USB hard disk from a store or from the Internet, but you may doubt whether this flash drive is original or whether the hard disk you bought is working efficiently or not.
In other words, how can you be sure that you can utilize every byte of the flash drive or hard disk? If you have a 3.75 GB flash drive, are you able to fill the flash drive with 3.75 GB files and utilize every byte on the flash drive? Or is the size on the flash drive imaginary and you cannot use it?
Can you really do that for long periods before it gets damaged? And how do you know the real file transfer speed on the flash drive? We will learn all of this in a very easy way in the lines of this topic.
You can watch this video to explain the method in detail.
First: When you buy a specific flash memory, memory card, or USB hard disk, let the flash memory capacity be 4 GB, and this is the common space, common size, or trade name.
But it is not the actual space that the operating system reads, whatever its type, whether (win7, win8, win10, linux, etc.), but it reads a lower value, such as 3.75 GB, based on a simple equation that we will show you.
Second: How do you differentiate between the size that appears on the operating system, is it a real size or just an imaginary size that is actually less than that?
- You must copy all the files on the flash memory, USB hard drive or SD Card to another location to keep them.
- We download this program (H2testw) through this link
- We say run the program as shown in the figure.
- We choose the English language as shown in the figure.
- We click on select target to choose the flash drive or hard disk on which the test is being performed, then we click on ok.
- We select all available space, then select write+verify to test the flash drive at full size.
- Then this message appears. We agree to it by clicking OK.
Its content:
- The flash drive will not be tested completely and there will be a number of bytes that will not be tested, but the program reassures you that if you have formatted the flash drive with the NTFS system, this is normal and the remaining space is due to the flash drive being on the NTFS file system.
- Do not remove the flash drive while the program is running.
- At this stage, the program starts working to appear like this. The idea of the program is that it writes data on each byte on the flash drive or hard disk and tests it itself.
If the program finds that the space that received the data on the flash drive is the same as the original space, this means that this flash drive is original and you can get its full size. Anything other than that means the opposite, of course.
After the program finishes testing the flash drive, it will appear like this:
The content of this message is that the size of the flash drive is 14783 megabytes and the space that received the data is 14782 megabytes. This means that there are no errors in the flash drive, and this appears in the message Test finished Without errors.
It also tells you that the file transfer speed on the flash drive is 6.96 MB/s.
So, quite simply, we have finished explaining how to test whether the flash drive is original or not. I hope the topic is useful.
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