USB device activity when not mounted
jmc-freebsd2 at milibyte.co.uk
Thu Jun 14 15:18:55 UTC 2012
On Thursday 14 June 2012 15:45:46 Polytropon wrote:
> However, as you said
> it might be possible that _inside_ the USB stick there is
> still an action that needs to be performed and therefore
> requires power.
That's a possibility.
> But I doubt this takes several seconds to
I've just run a test here. The umount command returns almost instantaneously
and the light, which is normally only lit while data is flowing, flickers
for about 2 seconds after the umount command. But further testing showed that
it flickers for 2 seconds after reading single byte file so perhaps the
blinkenlight is configured with a minimum activation time.
Being cautious however, I always wait a few seconds before removing any USB
stick from any computer.
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