Files, Folders missing, misplaced when teracopying to SD chip.

You can use check disk just to check it, without fixing any problems (chkdsk c:). The /f (chkdsk c: /f) is to fix the problems it encounter. Under Windows, as the disk is in use, it cant be done. That is why it must be done on a startup.

On the check disk log, look for bad clusters and/or bad blocks.

Megahertz07

The following images, 1 thru 6 represent the results I recd when I initiated H2testw to test the Samsung 256 mg micro SD formatted in ex FAT. (The drive was clean as per instructions I formatted as ex FAT.)

NOTE: somehow the forum uploaded images 2&3 out of order?

Sorry if I seem discombobulated as I'm not seeing what I expect to see & you have been patient and I don't want to waste your time.

Thanks & Regards,

klxdrt

Try to format he SD as Fat32 or NTFS

To format as Fat32
Open a CMD window as admin and type:
format /FS:FAT32 /Q K: (replace K with the drive letter)

To format as NTFS
Open a CMD window as admin and type:
format /FS:NTFS /Q K: (replace K with the drive letter)

The file 1.h2, 2.h2......500.h2 are the files h2testw.exe create to test the drive. After the test you can delete all them

Megahertz07,


Will do tomorrow as tonite, having a glass of red with my wife.


Thanks for introducing me a lit of new stuff.



You may want to follow this link: 4 Tools to Test and Detect Fake or Counterfeit USB Flash Drives • Raymond.CC , leads to other, quicker, programs like: h2testw.exe.


Regards,


klxdrt

Megahertz07,

Results below. SD was formated as NTFS. Should I re-format to exFAT?

Warning: Only 244094 of 244191 MByte tested.
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 16.2 MByte/s
Reading speed: 18.2 MByte/s
H2testw v1.4
1.h2w > 239.h2w
Warning: Only 244094 of 244191 MByte tested.
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 16.2 MByte/s
Reading speed: 18.2 MByte/s

Regards,

klxdrt

Every SD card has a natural (or default) format.
SD cards are normally used on portable devices as cameras. Normally cameras use Fat32 format.

eFat is universal. Mac, Linux and Windows can read/write on them.
If you're using as a storage on your computer I would format as NTFS that has a allocation table more robust.