H2testw results.....

zaneyzrex

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No knowledge about this stuff...

New 256GB extreme SanDisk sd card... seen how there are many fakes so ran h2testw on it... no clue how to read results..
20230527_064411.jpg
 

rcpd

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It basically tells you how much it was able to test in megabytes, for this drive it is 243Gb, which is pretty standard for a 256Gb drive.

It then tells you it was able to fill the drive fully and then verify every file it used to fill the drive without any errors in the verification process. This generally means the drive does in fact hold 243Gb of verifiable data without loss or corruption. Therefore, it passed.

That’s a legit drive. Kudos!
 
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Lamcza

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Sup, will bump here.

So i get this pretty cheap offer form amazon(official shop and amazon shipping) on sp 1tb micro sd and tested it in h2testw (exfat) to get this

Warning: Only 949057 of 949059 MByte tested.
The media is likely to be defective.
926.8 GByte OK (1943668480 sectors)
128 KByte DATA LOST (256 sectors)
Details:0 KByte overwritten (0 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
128 KByte corrupted (256 sectors)
0 KByte aliased memory (0 sectors)
First error at offset: 0x000000b27e6f8000
Expected: 0x000000b27e6f8000
Found: 0x000000b27e6f8a00
H2testw version 1.3
Writing speed: 47.9 MByte/s
Reading speed: 64.4 MByte/s
H2testw v1.4

is it becouse of exfat or card is quacked :D?

@Hayato213 @impeeza
 

Lamcza

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Filesystem has nothing to do with the results. Your card failed the test, you should get a replacement soon or you will lose all your data.
there is some warning about file system at the start of the test but i just click next on it :d and there is zero of my data on it test first :D i will run it on fat32 again but yea looks bad i guess
 

Hayato213

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Sup, will bump here.

So i get this pretty cheap offer form amazon(official shop and amazon shipping) on sp 1tb micro sd and tested it in h2testw (exfat) to get this



is it becouse of exfat or card is quacked :D?

@Hayato213 @impeeza

1TB cost around 100 US dollars here in the US so it would cost around 100 Euro, if you got it for really cheap it is bootleg. It has nothing to do with exFAT or FAT32, the card is bootleg.
 
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Lamcza

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1TB cost around 100 US dollars here in the US so it would cost around 100 Euro, if you got it for really cheap it is bootleg. It has nothing to do with exFAT or FAT32, the card is bootleg.
nah it was for 75 $ ; ) deal was good but card its quacked it is probbably just my luck :D iam almost at the end (3h left xD) of testing on fat32 but not expecting any different iam cover by amazon so its ok :D

wonder if i should go for another one or pass with this brand hmmm :X shame becouse besides bad sectors it is pretty fast : D and has zero problem with overheating like lexar play

btw it is this card

https://www.amazon.pl/Silicon-Power-kompatybilny-Nintendo-Switch-adapterem/dp/B0B1DVMCQY/ref=sr_1_1?__mk_pl_PL=ÅMÅŽÕÑ&crid=1NKUKTIQQRBAL&keywords=micro+sd+1tb&qid=1693940697&sprefix=micro+sd+1+t,specialty-aps,173&sr=8-1-catcorr&srs=77314970031&th=1
Post automatically merged:



Edit:
hmm so i guess it is fine in fat32 lol :D

@impeeza @Hayato213
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 37.6 MByte/s
Reading speed: 65.4 MByte/s
H2testw v1.4


should i run third test for 11h to be sure lol :D? i think i will test smaller cards in exfat to check if they get error in this format.

:toot:
 
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Hayato213

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nah it was for 75 $ ; ) deal was good but card its quacked it is probbably just my luck :D iam almost at the end (3h left xD) of testing on fat32 but not expecting any different iam cover by amazon so its ok :D

wonder if i should go for another one or pass with this brand hmmm :X shame becouse besides bad sectors it is pretty fast : D and has zero problem with overheating like lexar play

btw it is this card

https://www.amazon.pl/Silicon-Power-kompatybilny-Nintendo-Switch-adapterem/dp/B0B1DVMCQY/ref=sr_1_1?__mk_pl_PL=ÅMÅŽÕÑ&crid=1NKUKTIQQRBAL&keywords=micro+sd+1tb&qid=1693940697&sprefix=micro+sd+1+t,specialty-aps,173&sr=8-1-catcorr&srs=77314970031&th=1
Post automatically merged:



Edit:
hmm so i guess it is fine in fat32 lol :D

@impeeza @Hayato213



should i run third test for 11h to be sure lol :D? i think i will test smaller cards in exfat to check if they get error in this format.

:toot:

I guess keep it if it did tested 949057 of 949059 MByte.
 
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Lamcza

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I guess keep it if it did tested 949057 of 949059 MByte.
yep on exfat it gets some popout info that it will thest card without few mb on 64gb also but in fat32 it is testing all of the space

i mean in exfat it is trying to test 949059 but it cant so after the popout massage it is going for 949057 but on fat32 it is testing 949057 of 949057 without error
 
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rcpd

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Filesystem has nothing to do with the results. Your card failed the test, you should get a replacement soon or you will lose all your data.
File system can actually have something to do with it. FAT32 has a different allocation table than both exFAT and NTFS. exFAT and NTFS allocation tables are much more forgiving than FAT32.
Post automatically merged:

yep i exfat it get some popout that it will thest card without few mb on 64gb also but in fat32 it is testing all of the space

i mean in exfat it is trying to test 949059 but it cant so adter the popout massage it is going for 949057 but on fat32 it is testing 949057 of 949057 without error
As I said in my previous post, this is likely due to the way each file system handles allocation tables. This is completely normal.
 

Lamcza

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File system can actually have something to do with it. FAT32 has a different allocation table than both exFAT and NTFS. exFAT and NTFS allocation tables are much more forgiving than FAT32.
Post automatically merged:


As I said in my previous post, this is likely due to the way each file system handles allocation tables. This is completely normal.
so if it is passing on fat32 without errors it should be fine?
 

Sypherone

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Best first run in Powershell chkdsk <driveletter>/r as it will check for filesystem errors and correcting them. Also for corrupt sectors ,blacklisting them and uses reservesectors at the and of the drive.
  • Best on new formated emty drive, else it will check for corrupted files and tryes to restore them. So the check will take much longer. Dependend on file amaount ~1h per 100gb.
The filesystem for h2wtest is normaly not interresting (but exfat uses by standard a bigger allocation unit then fat32). As h2wtest will simply write a file into each allocation unit and in next step will verify if its readable.
 
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CMDreamer

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File system can actually have something to do with it. FAT32 has a different allocation table than both exFAT and NTFS. exFAT and NTFS allocation tables are much more forgiving than FAT32.
Post automatically merged:


As I said in my previous post, this is likely due to the way each file system handles allocation tables. This is completely normal.
Not likely the filesystem to be the culprit, once data sectors are damaged the filesystem won't fix them. They are marked as damaged and unuseable. The amount of damaged data sectors can be obtained using a software like Crystal Disk Info.

More recent filesystems have some data protection measures that previous ones don't. Data allocation is OS and filesystem independent, because it manages the granularity of the data being allocated on the storage sectors of the drive.

Filesystems refer to how the files are being managed (folder and file dependant), while data allocation means how the data is being managed (folder and files independant).

What HWTest does is (as the name implies) test the physical sectors on the storage by writing and reading back some files of a certain amount of bytes, expecting them to be read without data loss.
 

Lamcza

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Not likely the filesystem to be the culprit, once data sectors are damaged the filesystem won't fix them. They are marked as damaged and unuseable. The amount of damaged data sectors can be obtained using a software like Crystal Disk Info.

More recent filesystems have some data protection measures that previous ones don't. Data allocation is OS and filesystem independent, because it manages the granularity of the data being allocated on the storage sectors of the drive.

Filesystems refer to how the files are being managed (folder and file dependant), while data allocation means how the data is being managed (folder and files independant).

What HWTest does is (as the name implies) test the physical sectors on the storage by writing and reading back some files of a certain amount of bytes, expecting them to be read without data loss.
And what does all of this mean for me :D? i should check sd with Crystal Disk Info and look for bad sectors info?
 

Hayato213

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And what does all of this mean for me :D? i should check sd with Crystal Disk Info and look for bad sectors info?

I agree with @CMDreamer on this, as bad sector can't be fixed, so there is something wrong with the card, I would return it if I were you, considering you just got it out of the box and ran a h2wtestw on it, it is common for it to throw error on bootleg card.
 
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Lamcza

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I agree with @CMDreamer on this, as bad sector can't be fixed, so there is something wrong with the card, I would return it if I were you, considering you just got it out of the box and ran a h2wtestw on it, it is common for it to throw error on bootleg card.
the card is not fake is just silicon power idk if iam getting it right if i get these bad sectors and reformat the card after then test again with h2testw it will not show again in the test results because they are marked as dmg and cut off? But they will be present when checking in crystal?
 

Hayato213

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card is not fake is just silicon power :D idk if iam getting it right if i get this bad sectors and reformat card after then test again with h2testw it will not show again in the test resoults becouse the are marked as dmg and cut off? But they will be present when checking by crystal?

I still would be more cautious since it did throw the media is likely to be defective , also Silicon Power isn't popular for micro SD.
 
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The Real Jdbye

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And what does all of this mean for me :D? i should check sd with Crystal Disk Info and look for bad sectors info?
You can try the following:
1. Run chkdsk with surface scan: in Command Prompt: chkdsk /F /R /X E: (replace E: with the correct drive letter)
2. Do a full (slow) format of the card
3. Then run h2testw again, and see if the issue persists.
Step 1 and 2 can help to remap bad sectors, and can sometimes restore them to working. I still wouldn't trust this card, but it may still be usable. It's likely the card is just getting worn out, and the issues will get worse, so this will at best probably only extend the life of the card a little.
Step 1 will also tell you if any bad sectors were found (and if they were repairable), even if it was not able to repair them, step 2 might be able to.

Stick with popular memory card brands (mainly Samsung and SanDisk) as they last longer in my experience. SD cards don't last terribly long at the best of times, but they seem to have better quality control than some of the competition.

Edit: For the record, CrystalDiskInfo doesn't work on SD cards. SD cards have no SMART info, which is what CrystalDiskInfo reads.
 
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Sypherone

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just reformatting the device will not mark bad sectors. You will need to run chkdsk, this will mark them as bad sectors and reallocate reseve sectors from a hidden spare area. Then bad sectors will not show up again. Chrystal Disk will show a value of the amount of used reseve sectors, if a high amount would be probably used will say the card is dying.

1. Run chkdsk with surface scan: in Command Prompt: chkdsk /F /R /X E: (replace E: with the correct drive letter)
Chkdsk /F togeter with /R is not necessary, as /r includes /f
 
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