Why can't my USB drive accept a large file, as in bigger than 3.50 gb, when it is formatted in FAT32?

My drive is a (16 gb) drive, but when I tried to send an ISO file to it while it was formatted in FAT32, it didn't accept it and showed a message that the file was too large. I reformatted my usb in NTFS and sent the ISO file again. This time the file was transferred successfully.

So why didn't it work when it was formatted in FAT32?

  • This question should be reopened. I disagree that it is a duplicate. The sited "original" question is about how to get around the file size limit, whereas this one was more simply, "why couldn't I transfer the file?" (because there is a size limit). These questions are closely related, but not duplicates. – James Dunn Dec 21 '18 at 18:22

Look at here especially §FAT32

The maximum possible size for a file on a FAT32 volume is 4 GiB minus 1 byte or 4,294,967,295 (232 − 1) bytes. This limit is a consequence of the file length entry in the directory table and would also affect huge FAT16 partitions with a sufficient sector size.[1] Large video files, DVD images and databases often exceed this limit.

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