I bought a microSD card on Amazon, and since it was sold and shipped by Amazon, I thought it would be reliable. However, when I tested it with H2testw, I encountered an error message. I hadn't formatted the card yet, which was still in exFAT format, and I was using a microSD to USB-C adapter. After running the test again, the verify+write option was greyed out, and I could only do a verify test, which checked only about 1048 MB. I also tried using the provided microSD to SD adapter directly into my laptop but faced the same issue. Eventually, I reformatted the card to NTFS, which allowed me to start a verify+write test, and it's currently running. I have a few notes to consider:
1. The USB-C adapter might have disconnected during the first test attempt.
2. There were two files on the SD card named 1.h2w and 2.h2w from H2testw.
3. All subsequent attempts only verified about 1048 MB each time.
4. The microSD showed up as a USB flash drive regardless of the adapter used.
Given these issues, does it sound like my card is corrupted or possibly a fake? Should I consider returning it?
3 Answers
Keep in mind that if H2testw throws any errors, it generally means the storage device isn't reliable. You might have received a dud here.
If you're questioning the authenticity or reliability of your SD card, just return it. There's no surefire way to guarantee it’s legit. It’s better to invest a bit more money into a quality card from a reputable electronics or camera store. There are a lot of counterfeit SD cards floating around on Amazon.
If the verify+write option was greyed out, make sure to delete the .h2w files that the initial test creates before running a new one. That might be why you couldn't select that option again. Check out the guide on using H2testw to avoid these issues next time!
Thanks for the tip! I’ll delete those files next time before running a test.