When I put a 128GB sd card in my computer (windows 10 pro) the only format options available are ntfs and exfat. If you are able to format a greater than 4GB sd card as fat32, you will only be able to use 4GB of the available space. Anything above 4GB will be wasted.
A few errors there.
1) You can't format a large card (128GB) on Windows 10 in Fat32 - Partly TRUE
- Windows can't do it on it's own - you need to use a 3rd party utility like the one I linked to above
2) You can only write 4GB on a Fat32 drive - FALSE
- You can fill the entire drive. The biggest any single file can be is 4GB but you can have as many 4GB files
as the drive can hold. The Mavic breaks your video files up into 4GB segments anyway so that's not an issue.
The whole problem with Fat32 is that it divides up the drive into clusters. A file can never take up less than one cluster of your drive. You have a limited number of clusters with Fat32. That's why Microsoft extended Fat32 to exFat and then later introduced NTFS. You can now have a file allocation table that references a lot more clusters.
If you format a really big drive with Fat32 then, because you have a limited number of clusters, each cluster has to be big. If you fill your drive with zillions of tiny files and each tiny file is sitting all alone in a gigantic cluster there will be a lot of wasted space on your drive.
A bit like if you were a trailer park owner and you divided your trailer park up into 5 acre lots. Each trailer would sit on 5 acres. Huge waste of space - although I'm sure the trailer owners would be happy. If you were selling lots for gigantic Neverland style mansions then a 5 acre lot might make a lot more sense.
This could be an issue if you were using your Mavic to shoot photographs. It's not an issue if you are using it for video because the video files are really big - you won't waste much space even with huge clusters.
Or just believe whatever you like. Lol... I sorta wish I'd never brought this topic up. It's giving me a headache.