I'm not sure if this is the place to post this, but I am having trouble copying my romfs file to the SD card for my 3DS after running it through pk3DS. It's a 16GB official Nintendo SD card that came with it and when I try to copy the file over, it fails about 3/4 through. Most info about the error has to do with copying a 4+GB file to a Fat32 drive, which I know is the maximum file size, but the romfs file is only 1.8 GB.
The error I end up with is "the destination you have specified does not exist", and I have to reconnect the SD-USB adapter to the PC to get it to show up again. I tried splitting the Romfs file into two .rar files and transferring it over that way and it transferred fine, but when I went to extract it, it once again gave the same error.
I can't figure out why it would be giving this error, considering when I did the original rom dump I had a 1.8 GB file on the SD card without issue.