I already did that.
Just after I created the filesystem, months ago.
But, thanks again for sharing this with us.
I left the default size on my primary HDD and set -m 0 to all my backup drivers (Music, Movies, Pictures etc)
So far, so good.
I'm assuming that EXT4 still sets to 5% to root reserved space.
Have you (or anyone reading this thread) upgraded your existent EXT3 partitions to EXT4?
I'm really curious about how it went through.
Thanks for reading.