[Q] How to understand the result of H2testw

injulia

Senior Member
Dec 8, 2008
152
28
0
Singaraja - Bali
Excuse me,

I have bought Sandisk Micro SDHC, 32GB, class 10.


With the adaptor to SD Card (included), the H2test say; Error.
there is file *.h2w , on card, it mean not in writte protected mode.

So, i use Micro card reader, the first test:is:
The media is likely to be defective.
29.6 GByte OK (62237560 sectors)
34.5 MByte DATA LOST (70792 sectors)
Details:11.8 MByte overwritten (24288 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
22.7 MByte corrupted (46504 sectors)
11.8 MByte aliased memory (24288 sectors)
First error at offset: 0x00000000ee904000
Expected: 0x00000000ee904000
Found: 0x00000003ee904000
H2testw version 1.3
Writing speed: 3.96 MByte/s
Reading speed: 16.5 MByte/s
H2testw v1.4

I format with:
https://www.sdcard.org/downloads/formatter_3/

and tes again, the result is:

The media is likely to be defective.
29.6 GByte OK (62266396 sectors)
20.4 MByte DATA LOST (41956 sectors)
Details:20.4 MByte overwritten (41956 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
0 KByte corrupted (0 sectors)
20.4 MByte aliased memory (41956 sectors)
First error at offset: 0x0000000153404000
Expected: 0x0000000153404000
Found: 0x000000039340c000
H2testw version 1.3
Writing speed: 4.74 MByte/s
Reading speed: 16.7 MByte/s
H2testw v1.4
What does it means?

***
I Insert to SGSII, with app: SD Tools, it says :
write speed: 9.1 MByte/s
Read speed : 20.7 MByte/s



Please advise me, must I retour this Micro SDHC ?

Thanks
 

lambstone

Senior Member
Mar 27, 2008
1,627
264
113
That means its ok.

If they say 1000mb tested and 800mb lost, it means that the actual capacity is 200mb. Hence, your micro sd card seems to have the standard 32gb capacity

HOWEVER, you were scammed. Class 10 sd cards should not have "Writing speed: 4.74 MB" It should be around 10MB

So yes, you should 'retour' your sd card. If you used paypal, I think you can get a full refund without having to send back anything as this is obviously a counterfeit item.
 
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injulia

Senior Member
Dec 8, 2008
152
28
0
Singaraja - Bali
That means its ok.

If they say 1000mb tested and 800mb lost, it means that the actual capacity is 200mb. Hence, your micro sd card seems to have the standard 32gb capacity

HOWEVER, you were scammed. Class 10 sd cards should not have "Writing speed: 4.74 MB" It should be around 10MB

So yes, you should 'retour' your sd card. If you used paypal, I think you can get a full refund without having to send back anything as this is obviously a counterfeit item.
I understand, it is 32 GB.
And I have register the serial number to :
http://www.sandisk.com/

and no problem, they said: in warranty.

and test in my Samsung galaxy SII, with "SD Tools",

I Insert to SGSII, with app: SD Tools, it says :
write speed: 9.1 MByte/s
Read speed : 20.7 MByte/s
I think the different speed may be because the Sandisk MIcroSDHC card reader, my Netbook (MSI U230, Windows XP SP2) or some thing else that may be not compatible with SDHC card.
because, in first test, i use the Adaptor to SD, insert to SD card slot in my Netbook: The H2testw said: Error. But with explorer, i can copy file to the card.

Then, i use Sandisk MicroSDHC card reader, insert to USB port in my netbook. And the H2testw said:

The media is likely to be defective.
29.6 GByte OK (62266396 sectors)
20.4 MByte DATA LOST (41956 sectors)
Details:20.4 MByte overwritten (41956 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
0 KByte corrupted (0 sectors)
20.4 MByte aliased memory (41956 sectors)
First error at offset: 0x0000000153404000
Expected: 0x0000000153404000
Found: 0x000000039340c000
H2testw version 1.3
Writing speed: 4.74 MByte/s
Reading speed: 16.7 MByte/s
H2testw v1.4

So, about the size (32 GB) and speed (9.1MByte/s) it is fine.

What I don't understand is that i bold. :)

Thank you
 
Last edited:

injulia

Senior Member
Dec 8, 2008
152
28
0
Singaraja - Bali
SD Formatter 3.1 for SD/SDHC/SDXC

This software formats all SD memory cards, SDHC memory cards and SDXC memory cards. SD Formatter provides quick and easy access to the full capabilities of your SD, SDHC and SDXC memory cards.

The SD Formatter was created specifically for memory cards using the SD/SDHC/SDXC standards. It is strongly recommended to use the SD Formatter instead of formatting utilities provided with operating systems that format various types of storage media. Using generic formatting utilities may result in less than optimal performance for your memory cards.

The SD/SDHC/SDXC memory cards have a "Protected Area" on the card for the SD standard's security function. The SD Formatter does not format the "Protected Area". Please use appropriate application software or SD-compatible device that provides SD security function to format the "Protected Area" in the memory card.
Is there a related between:
  • "Protected Area" on the card for the SD standard's security function.
  • 20.4 MByte aliased memory (41956 sectors)

???

PS:

I have tested my 8 GB sandisk MicroSDHC class 4, on the same netbook and micro card reader:
[It is the memory card that i use in my SGSII, has many file, and only have space : 1,8GB ]

Warning: Only 1846 of 7561 MByte tested.
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 4.58 MByte/s
Reading speed: 12.3 MByte/s
H2testw v1.4
it means my netbook, my windows, my Sandisk MicroSDHC card reader is fine.
 

KraftwerkElectro

Senior Member
Jul 7, 2013
86
0
0
Tested - ADADTA microsd card

I bought a 32GB ADATA (upgraded) microsd card off Ebay.
It arrived in what looked like it's proper packaging but on the actual microsd card it said 64GB?
I did the test and the results are below - they don't look good.
Is the H2testw always 100% accurate because I don't want to complain to the seller if there is nothing actually wrong.
Thanks
 

rani_345

New member
Oct 14, 2015
1
0
0
How to gets off write protected the USB with h2testw and now USB is going write protected and can't working. And it can't formatting any one software and other format tools.