How To: Format Your SD Card Back to the Original Size (WINDOWS)





Introduction: How To: Format Your SD Card Back to the Original Size (WINDOWS)

After writing any image with an OS for your raspberry pi, you may have notice that no matter the size of your SD card, windows can only recognize one partition with about 60 mb. If you try to format it in the Computer menu (righ-click on it and press format), it will only free the space in that partition, to have access to the full space you have two options (only one is needed):
- SIMPLE PROCESS: step 1 - SD Formatter
- ADVANCED PROCESS: step 2 - DiskPart

Step 1: SIMPLE PROCESS: SD Formatter

1 - Download and install this software (from the SD card Organization) :

2 - Open the program, and select the right drive (in my case is G:), after that just click "FORMAT"

3 - You have just formatted your SD card! CONGRATULATIONS


1 - Go to the windows start button, write diskpart and press "enter"

2 - Wait a few seconds and write on this order:
- "list disk" - shows you the disks that are currently connected to the computer;
- "select disk X" - substitute x with the number of the disk
- "clean" - deletes all the data in the SD (you may have to remove and reinsert the card after this step)
- "create partition primary" - creates a partition in the sd
- "format quick" - makes a quick format

3 - You have just formatted your SD card! CONGRATULATIONS

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107 Discussions

thanks for creating this! i have a stack of cheap sd cards that we're going to try to breathe a bit more life into them by trying this. otherwise, we might go toward making some cool accents for crafting projects.

Thanks for the thread.. worked perfectly

Thank you!

My dash camera had made my 32Gb card into a 100Mb )

Easy fix, thank you for the guide.

I wish I could say this worked but I can't because my system STILL can't see the SD card. I'm using Windows 10 and it seems from the literally thousands of users of that OS, that NOBODY can see a 32 GB ScanDisk card. I wasted an hour on a chat with one of their reps and he didn't have a clue either. Not sure what my next steps are. Just an FYI, I need the large storage because I'm using the card with a Raspberry P1 3 in tandem with a 3D printer set up.

1 reply

struggled for a couple of hrs with this as well. Tried LLF, Diskpart, SD formatter, HD Recovery tools, Rufus, HP USB formatter... finally decided to try my SD to USB adapter. Used Rufus to format as Fat32/4096 and sure enough, Windows 10 recognized it as 32GB.

in my case disnt work why i tries diskpart too. i have 16 gb samsung sd card its shows 121 mb and couldnt format to excess it any solution..


6 months ago

Thank you so much! You saved my 15 GB MicroSD Card!

Salamat po!!!

Thanks A Lot magamig you saved my 64gigs and Solved my error on win7

wonderful, did it successfully, thanks a lot

followed the instructions everything went along well

but my 64 gig sd card still says 27 gig

ideas thank you

Godsend!! Saved my 64GB SD card. More strength to you mate!! Took just a few minutes to get out of misery!!! Thank you!!!

Why don't I remember to come to instructables whenever I need to do something? Always the best information with the simplest instructions. I could have saved two hours. Thanks!

It'd not working


1 year ago

Dang! I threw away a few micro SD cards thinking they were damaged. Thank you for posting this.


1 year ago

thank you!

pls help getting this as answer

DISKPART> create partition primary

No usable free extent could be found. It may be that there is insufficient

free space to create a partition at the specified size and offset. Specify

different size and offset values or don't specify either to create the

maximum sized partition. It may be that the disk is partitioned using the MBR disk

partitioning format and the disk contains either 4 primary partitions, (no

more partitions may be created), or 3 primary partitions and one extended

partition, (only logical drives may be created).