SD card unpartitioned space -- used for swap?
Richard A. Smith
richard at laptop.org
Wed Nov 24 09:53:28 EST 2010
On 11/22/2010 07:20 PM, James Cameron wrote:
>> Also, I'm not familiar with "evil keepout time". But note that on the
>> new XO-1 F14 build, the "shutdown" time-lapse is only a few seconds.
>> If actually 30s are needed to keep the SD circuitry happy, perhaps a
>> delay (and a Release Notes explanation) should be added to the OLPC.
> I suspect the "evil keepout time" is the time after the last write
> request to the card and the removal of power. It is why current XO-1.5
> EC firmware blinks the power LED for some seconds on power off.
Its 3 seconds and only active for internal uSD. You need really new 1.5
firmware to have this delay.
If you are running on external SD there is at least one 8 gig card with
a flash controller (which could be in multiple different cards) that
will become completely unusable if you power it off less than 2 seconds
or so from the last write. I recommend you do hard power offs little as
possible. Suspend/resume also should be disabled.
Richard A. Smith <richard at laptop.org>
One Laptop per Child
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