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Subject: Re: Configurable disk spindown
From: George Styles \(RipnetUK\) (george_at_ripnet.co.uk)
Date: 2002-08-26


But doesnt the movement to sleep position protect the head against
mechanical shock? arent you most likely to drop the thing while getting it
out of pocket to change track?

g

----- Original Message -----
From: "Uwe Freese" <mail_at_uwe-freese.de>
To: "Björn Stenberg" <rockbox_at_cool.haxx.se>
Sent: Monday, August 26, 2002 9:26 PM
Subject: Configurable disk spindown

> Hallo Björn,
>
> Björn Stenberg schrieb am Monday, August 26, 2002, 3:21:16 PM:
>
> BrS> Modified Files:
> BrS> ata.c ata.h
> BrS> Log Message:
> BrS> Added configurable disk spindown. The disk will also now not spin
> BrS> down while you are running around in the dir browser or pressing
> BrS> buttons in the wps.
>
> Really nice work so far! When it spins down or keeps spinned up
> behaves exactly as I like it.
>
> But: Not to spin up the disk speeds up dir-browsing ~ 2 sec or so, but
> the drive moves its heads to a "sleep" position when it doesn't read
> something for about a second.
> Moving the heads out of this sleep position before being ready for
> reading (the next dir) takes about 1 second. (One can test this by
> browsing several directories with a pause of some seconds and browsing
> through several dirs /very/ quickly, so that the hdd doesn't move the
> heads to the "sleep" position.)
>
> Is it possible to prevent the disk to move it's heads to the "sleep"
> position? I think of a do_something() method in ata.c that only reads
> again the last sector that was read and that's called every 0.5
> seconds in the loop before spinning down the disk.
>
> Bye, Uwe.
>
>



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