Date: Sun, 29 Jun 2003 19:21:30 +0100
From: John Bradford <john@grabjohn.com>
Message-Id: <200306291821.h5TILUbl001109@81-2-122-30.bradfords.org.uk>
To: fsdeveloper@yahoo.de, linux-kernel@vger.kernel.org
Subject: Re: IDE-disk spindown fails
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1611
Lines: 51

> I have a problem spinning down my Western Digital 80GB harddisk.
> root@server:~> cat /proc/ide/hdc/model =20
> WDC WD800BB-00CAA1
>
> Neither hdparm -S nor noflushd is able to spin down this disk.

I've seen disks that don't spin down when set with a timeout using
hdparm -S, that do spin down when given an hdparm -y command,
(I.E. they spin down immediately).

Does hdparm -y cause your disk to spin down?

> The machine is a very old Pentium 1 machine. It's BIOS doesn't
> recognize this new (I've bought it a few days ago) harddisk.
> So I've set this IDE-channel to "none" in the BIOS to avoid
> very long searches on this channel from BIOS while booting.

Good idea.

> Reading and writing on the disk works quite fine.

Good.

> /dev/hda is the drive, the system is installed on.
> It's a very old 2GB Quantum drive.
> root@server:~> cat /proc/ide/hda/model=20
> QUANTUM FIREBALL_TM2110A
>
> The BIOS recognizes it and I'm able to spindown it.
>
>
> Does linux depend on the BIOS when spinning down?

No.

> root@server:~> cat /proc/version=20
> Linux version 2.4.21 (mb@lfs) (gcc-Version 3.3.1 20030519 (prerelease))=
>  #2 Son Jun 15 13:08:42 CEST 2003
>
> If you want me to run any tests on the machine, or if you
> want some information, I've not given, just ask, please.

Test whether hdparm -y works - it should spin the disk down
immediately.

John.
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