Nautilus disk cache behaviour

[Narcis Garcia]

Hello,

I've seen that in Ubuntu-Gnome 14.04 (32-bits), when copying files from
internal device to USB store (such as pendrive), disk write cache is not
working.

In Ubuntu-Gnome 14.04 (64-bits) disk write cache works (it's better),
but at the end of copy progress bar cache is synced, and I feel is
convenient to wait before doing more write operations.

My question:
Is there any way to configure Nautilus to not sync write cache at any
time (only when umount, of course)?