[SOLVED] Can't format my Micro SD

[GetJammin]

Hey all,

I have been running into trouble trying to format a 400gb Sandisk micro SD that I own. Windows and other 3rd party software that I have tried have been unable to format the card. SD Card Formatter is giving me the following debug. Does anyone know if there's a way I can solve this problem?

FSTYPE:exFAT
FSCLUSTERSIZE:262144
DEVICETOTALBYTES:393836756992
FSTOTALBYTES:393803202560
FSBYTESFREE:393802416128
FSLABEL:
PROGRESS:0/100 Overwriting the beginning of the device with zeroed data...
PROGRESS:1/100 Overwriting the beginning of the device with zeroed data...
PROGRESS:1/100 Overwriting the end of the device with zeroed data...
PROGRESS:3/100 Overwriting the end of the device with zeroed data...
PROGRESS:3/100 Writing allocation bitmap...
PROGRESS:3/100 Writing allocation bitmap...
PROGRESS:3/100 Writing upcase table...
PROGRESS:4/100 Writing upcase table...
PROGRESS:4/100 Writing root directory...
PROGRESS:4/100 Writing root directory...
PROGRESS:4/100 Writing file allocation table...
PROGRESS:6/100 Writing file allocation table...
PROGRESS:8/100 Writing file allocation table...
PROGRESS:10/100 Writing file allocation table...
PROGRESS:11/100 Writing file allocation table...
PROGRESS:13/100 Writing file allocation table...
PROGRESS:15/100 Writing file allocation table...
PROGRESS:15/100 Writing boot region...
PROGRESS:16/100 Writing boot region...
PROGRESS:18/100 Writing boot region...
PROGRESS:20/100 Writing boot region...
PROGRESS:22/100 Writing boot region...
PROGRESS:23/100 Writing boot region...
PROGRESS:25/100 Writing boot region...
PROGRESS:27/100 Writing boot region...
PROGRESS:29/100 Writing boot region...
PROGRESS:30/100 Writing boot region...
PROGRESS:32/100 Writing boot region...
PROGRESS:34/100 Writing boot region...
PROGRESS:36/100 Writing boot region...
PROGRESS:38/100 Writing boot region...
PROGRESS:39/100 Writing boot region...
PROGRESS:41/100 Writing boot region...
PROGRESS:43/100 Writing boot region...
PROGRESS:43/100 Creating SD-compatible partition table...
PROGRESS:45/100 Creating SD-compatible partition table...
PROGRESS:46/100 Creating SD-compatible partition table...
PROGRESS:48/100 Creating SD-compatible partition table...
PROGRESS:50/100 Creating SD-compatible partition table...
PROGRESS:52/100 Creating SD-compatible partition table...
PROGRESS:53/100 Creating SD-compatible partition table...
PROGRESS:55/100 Creating SD-compatible partition table...
PROGRESS:57/100 Creating SD-compatible partition table...
PROGRESS:59/100 Creating SD-compatible partition table...
PROGRESS:61/100 Creating SD-compatible partition table...
PROGRESS:62/100 Creating SD-compatible partition table...
PROGRESS:64/100 Creating SD-compatible partition table...
PROGRESS:66/100 Creating SD-compatible partition table...
PROGRESS:68/100 Creating SD-compatible partition table...
PROGRESS:69/100 Creating SD-compatible partition table...
PROGRESS:71/100 Creating SD-compatible partition table...
PROGRESS:73/100 Creating SD-compatible partition table...
PROGRESS:75/100 Creating SD-compatible partition table...
PROGRESS:76/100 Creating SD-compatible partition table...
PROGRESS:78/100 Creating SD-compatible partition table...
PROGRESS:80/100 Creating SD-compatible partition table...
PROGRESS:82/100 Creating SD-compatible partition table...
PROGRESS:84/100 Creating SD-compatible partition table...
PROGRESS:85/100 Creating SD-compatible partition table...
PROGRESS:87/100 Creating SD-compatible partition table...
PROGRESS:89/100 Creating SD-compatible partition table...
PROGRESS:91/100 Creating SD-compatible partition table...
PROGRESS:92/100 Creating SD-compatible partition table...
PROGRESS:94/100 Creating SD-compatible partition table...
PROGRESS:96/100 Creating SD-compatible partition table...
PROGRESS:98/100 Creating SD-compatible partition table...
PROGRESS:100/100 Creating SD-compatible partition table...
[ERROR] Encountered invalid FAT cluster at end of 1-cluster extent starting at cluster (FCN) 6 (0x6) while searching for extent at cluster chain index 0: 0 (0x0) (max FAT cluster number: 3004481)
[ERROR] Error while calculating cluster count for root directory: 34 (Result too large)
[ERROR] Initializing cached values failed: 34 (Result too large)
[ERROR] Generated invalid volume. exfat_volume_create returned: 34 (Result too large)

 

[USAFRet]

How old is it?
Is it still under warranty?

 

[lvt]

Is it the first time you format the card?

 

[GetJammin]

How old is it?
Is it still under warranty?

It's 3 years old, so it does seem like it should be under their 5 year warranty. I'll check that out.

 

[GetJammin]

Is it the first time you format the card?

I don't think I ever sucsessfully formatted the card. The first time I tried a while ago it was unable to.

 

[USAFRet]

It's 3 years old, so it does seem like it should be under their 5 year warranty. I'll check that out.

It may be physically defective.

Warranty replacement.
Contact the manufacturer.

 

[lvt]

I don't think I ever sucsessfully formatted the card. The first time I tried a while ago it was unable to.

What do you use as operating system?

 

[lvt]

If you are using Windows 7 and up, you can try this tool after backing up all your data (if any) :

https://www.partitionwizard.com/free-partition-manager.html

If you see your SD card listed in the list, use the format function to format the card, if your card has more than one partition, you must format them one by one, or to make thing simple, delete all those partitions and format the SD card as a single 400GB partition.

 

[GetJammin]

What do you use as operating system?

If you are using Windows 7 and up, you can try this tool after backing up all your data (if any) :

https://www.partitionwizard.com/free-partition-manager.html

If you see your SD card listed in the list, use the format function to format the card, if your card has more than one partition, you must format them one by one, or to make thing simple, delete all those partitions and format the SD card as a single 400GB partition.

Windows 10. And I tried to use partition wizard. It told me it formatted correctly, but it wouldn't actually change anything.

 

[GetJammin]

It may be physically defective.

Warranty replacement.
Contact the manufacturer.

Going to send it back to sandisk.

 

[lvt]

At least you should make sure that the SD card reader you are using is certified for high capacity SD card like this. Some old SD card reader can't do that.