Help With USB Stick

[venomx]

Got a 16gb and 32gb USB stick which I want to connect to my cars sound system. However the format must be Fat32

I formatted to Fat32 but when I try to transfer my music folder over, it says " There is insufficient disk space "

My music library is about 12GB, and there are no individual files over 4GB ( as you'd imagine most MP3s are about 4mb )

Whats going on here ? Thanks

Edit: I put the SD card ( which was in my phone ) into the card reader, then tried transferring and now it seems ok

 

[venomx]

Fully legit USB drives from Tesco.

I managed to transfer the files in the end by taking the SD card ( with the music on it ) out of my phone. Into a card reader, then to the USB stick.
The problem was with my phone