When I copy big files ( > 300MB ) from hard drive to SD-Card, copying slows dramatically after first 400mb, sometimes the copy process never ends.
I tried copying with double-commander, rsync (with progress indicator), and cp.
my setup:
- ubuntu 16.04
- microSD card, partition formatted to VFAT, 64GB total, 50GB, available
copying starts at 15 MB/s, and after ~400MB drops to nearly zero, after few minutes it can "randomally" resume, and slow again.
Even when it reaches 100%, the program will "freeze" for several minutes until it concludes writing.
Why is that?
Can I speed it up?
Will eXfat/NTFS solve it? (I need compatibility with windows).