Micro SD Card failure

I have a 64gb micro SD card that only sees 30mb.

I've tried https://www.sdcard.org/downloads/formatter/ but it won't format, and makes no difference.

The card is RAW,and healthy.

Does anybody know how i can restore and reuse this card please ??

This is the result i got from sd card formatter

https://www.sdcard.org/downloads/formatter/

SD Card Formatter version 5.0.3 (build 3023.2.3.14)
Developed by Tuxera Inc.
FSTYPE:FAT12
FSCLUSTERSIZE:16384
DEVICETOTALBYTES:32070144
FSTOTALBYTES:32047104
FSBYTESFREE:32030720
FSLABEL:
PROGRESS:0/100 Overwriting the beginning of the device with zeroed data...
PROGRESS:3/100 Overwriting the beginning of the device with zeroed data...
PROGRESS:3/100 Overwriting the beginning of the device with zeroed data...
PROGRESS:3/100 Overwriting the end of the device with zeroed data...
PROGRESS:6/100 Overwriting the end of the device with zeroed data...
PROGRESS:6/100 Creating SD-compatible partition table...
PROGRESS:6/100 Creating SD-compatible partition table...
PROGRESS:6/100 Writing root directory...
PROGRESS:6/100 Writing root directory...
PROGRESS:6/100 Writing file allocation table...
PROGRESS:6/100 Writing file allocation table...
PROGRESS:6/100 Writing file allocation table...
PROGRESS:6/100 Writing file allocation table...
PROGRESS:6/100 Writing reserved region...
PROGRESS:6/100 Writing boot region...
PROGRESS:6/100 Writing boot region...
PROGRESS:6/100 Zero-filling unused sectors...
PROGRESS:9/100 Zero-filling unused sectors...
PROGRESS:12/100 Zero-filling unused sectors...
PROGRESS:15/100 Zero-filling unused sectors...
PROGRESS:18/100 Zero-filling unused sectors...
PROGRESS:21/100 Zero-filling unused sectors...
PROGRESS:24/100 Zero-filling unused sectors...
PROGRESS:27/100 Zero-filling unused sectors...
PROGRESS:30/100 Zero-filling unused sectors...
PROGRESS:33/100 Zero-filling unused sectors...
PROGRESS:36/100 Zero-filling unused sectors...
PROGRESS:40/100 Zero-filling unused sectors...
PROGRESS:43/100 Zero-filling unused sectors...
PROGRESS:46/100 Zero-filling unused sectors...
PROGRESS:49/100 Zero-filling unused sectors...
PROGRESS:52/100 Zero-filling unused sectors...
PROGRESS:55/100 Zero-filling unused sectors...
PROGRESS:58/100 Zero-filling unused sectors...
PROGRESS:61/100 Zero-filling unused sectors...
PROGRESS:64/100 Zero-filling unused sectors...
PROGRESS:67/100 Zero-filling unused sectors...
PROGRESS:70/100 Zero-filling unused sectors...
PROGRESS:73/100 Zero-filling unused sectors...
PROGRESS:76/100 Zero-filling unused sectors...
PROGRESS:79/100 Zero-filling unused sectors...
PROGRESS:82/100 Zero-filling unused sectors...
PROGRESS:86/100 Zero-filling unused sectors...
PROGRESS:89/100 Zero-filling unused sectors...
PROGRESS:92/100 Zero-filling unused sectors...
PROGRESS:95/100 Zero-filling unused sectors...
PROGRESS:98/100 Zero-filling unused sectors...
PROGRESS:100/100 Zero-filling unused sectors...
[ERROR] Invalid end of sector signature: 0x0000
[ERROR] fat_check_validate_boot_sector returned error: 22 (Invalid argument)
[ERROR] Initializing cached values failed: 22 (Invalid argument)
[ERROR] Generated invalid volume. fat_volume_create returned: 22 (Invalid argument)

Hi, use chkdsk on it.     Then format /r as Fat32.   No need for a program.

Edited by Pkshadow, 21 June 2025 - 04:39 PM.

it says chkdsk is not available for RAW drives

You then need to format it. Then run chkdsk.

You then need to format it. Then run chkdsk.

Thanks PKShadow, it wouldn't format either. I've now almost gave it up, its either no good or maybe it was a scam drive (shouldn't be a i buy them all on amazon). Anyway, I've bought another couple. 

I want to use these things to store and backup primarily. 

I used to use external HDDs but I've had 2 which have both slowed right down to almost stopping when I update them

Edited by ne5, 27 June 2025 - 07:23 AM.

See if you can format the SD card using diskpart. 

Open a command prompt and type the following commands with the SD card attached

diskpart

list disk

select disk X   Where X is the number of your SD card. Make sure you have the correct number as you will wiping the disk in the next step. You don't want to wipe an internal drive.

clean

convert GPT

create partition primary

format fs=FAT32 Quick

assign

You should now have an SD card with the correct size formatted.