Format 64GB+ SD Card for 3DS/2DS

[mfraye]

Allocation unit size of 32768 is for 64GB. If your SD card capacity is more than 64GB, you need to use 65536 for the allocation unit size.

[parsaheed]

Thank you so much mate, Thought it wouldn't go anywhere with my 256G sd card but you fixed it, I've been stressed with this 3ds modding and you cured it! Thank you so much I wish the best for you

[wadub]

The other tutorial’s didn’t work but this one did thank you for making it. It was very helpful

[darklonewolf]

Quick, small and simple video. Appreciate it!

[Winner]

Still works almost 2 years later, thanks for having this quick and simple guide!

[onliner_]

guiformat shows the error “Failed to open device: GetLastError()=32”

Close everything that may be using the SD card, such as any File Explorer windows.
If this issue persists, try reformatting the card to NTFS in File Explorer, close that window when it’s done, and re-attempt the guiformat process.


guiformat shows the error “GetLastError()=1117”

Your SD card write-protection switch may be enabled. The lock must be flipped upwards to allow writing to the SD card (including formatting).

[Lumiknoll.]

it keeps saying the process cannot access the file because it is being use by another process

[cesardelgado]

I just tried it for my 128 gb and it was a success. THANK YOU!!!❤

[johanncarter]

Thank you sm bro, I was compensating of getting a 32GB sd card because of the issue I was facing with my 128GB sandisk. Im so relieved thank you sm!!

[earthtominiryu]

this worked perfectly and it was so easy! thank you so much ✨

[nameie]

thank you i just got a 128 gb that my japanese 3ds wouldnt recognise it, i almost thought id have to buy a new sd card but this video made it readable and is now ready for modding thanks again

[mowie]

oh my god you absolute angel this is the ONLY thing that has worked for me <33

[dougdimmadabs]

just added a 128gb now im off to mod my 2ds XL. ty for the video

[AAABattery__]

Thank you so much for this! Just got a 64 gb sd card and I can’t wait to add a ton of games to my 2ds! Such a simple tutorial, thanks!

[nexusguncaster]

Thanks so much for this! The link still works as as of September 2024.

[alex_is_shook]

I never knew about the Mac app, but it was very self explanatory after you mentioned it 😂

[Joey-zqpc]

Thank you I thought I messed up buying this sd card but I didn’t realize you needed to format it

[Oblisia]

Finally got the solution for the problem I had since last week, thanks for the video!

[icyplayz]

Thank you for the tutorial! It actually worked!

[ShortMiao]

This could help since I'm using a 128 GB microSD card for my 3DS. If I have any problems, I'll come back here!