Homebrew Switching SD Cards- HELP

[echo709]

Hello, so I recently had my new 3ds xl 11.5 hardmodded and had luma installed on it. Everything went well and I got cfw and freeshop and all that jazz. Here's the problem:

I recently purchased a larger micro sd card (128 gb) to upgrade my storage from my previous sd (16gb). I've already gone about reformatting the sd card to a fat32 so that the 3ds will read it. Thing is, when I go about transferring files from the old sd card to the new one, everything transfers well, except the "luma" folder. To be specific, whenever I try to put files into the "luma" folder on the new sd card (the config file, you know), once I've moved the file, when I take the sd card out of my computer, everything in the new sd card's "luma" folder deletes itself, thus making it impossible to turn on the 3ds with the new sd inserted cause it causes problems with the cfw and yada yada yada...

So my question is:
Has anyone else faced similar problems? If so, what did you do to fix it? If not, do you have any useful insight on the issue?

Any help at all is appreciated.

 

[Hayato213]

U have backup of your files in your 16GB Micro SD, use Minitool partition tool wizard to reformat the 128GB Micro SD

 

[echo709]

U have backup of your files in your 16GB Micro SD, use Minitool partition tool wizard to reformat the 128GB Micro SD

Thanks, but this isn't the problem. I am able to read the larger sd card, the problem comes when I start moving cfw stuff like luma

 

[Hayato213]

What brand and model is the card?

 

[Quantumcat]

Test the card with H2testw https://3ds.guide/h2testw-(windows) or F3X https://3ds.guide/f3x-(mac)