Both drives say that they are capable of the following:
DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 *udma4
I am supposing the star means that the drive is set to udma4, correct?
These are my hdparm settings:
hdparm -q -c3 -q -A1 -q -m16
This is what is specified in /etc/rc.d/init.d/mandrake_everytime (of course
I specified HDPARM=yes in /etc/sysconfig/system).
I didn't specify the dma option because it always locks up the WD drive..
BTW, both drives were bought within the last 3 months, so I assume they are
fairly new and should work with dma in linux.
>From: Eugenio Diaz <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: Re: [Cooker] U66 solved
>Date: Mon, 19 Jun 2000 13:46:07 -0700 (PDT)
>MIME-Version: 1.0
>Received: from [216.71.84.35] by hotmail.com (3.2) with ESMTP id
>MHotMailBB17D2D40073D820F39ED847542364490; Mon Jun 19 13:51:33 2000
>Received: (from sympa@localhost)by mandrakesoft.mandrakesoft.com
>(8.8.5/8.8.5) id PAA08219for [EMAIL PROTECTED]; Mon, 19 Jun 2000
>15:54:12 -0500
>Received: from web125.yahoomail.com (web125.yahoomail.com
>[205.180.60.193]) by mandrakesoft.mandrakesoft.com (8.8.5/8.8.5) with SMTP
> id PAA05577 for <[EMAIL PROTECTED]>; Mon, 19 Jun 2000 15:46:11
> -0500
>Received: (qmail 29612 invoked by uid 60001); 19 Jun 2000 20:46:07 -0000
>Received: from [207.36.26.1] by web125.yahoomail.com; Mon, 19 Jun 2000
>13:46:07 PDT
>From [EMAIL PROTECTED] Mon Jun 19 13:51:45 2000
>Message-Id: <[EMAIL PROTECTED]>
>X-Loop: [EMAIL PROTECTED]
>X-Sequence: 1282
>Precedence: list
>
>Did you do it specifiying both flags at the same time?
>
>What -Xxx value did you use?
>
>First query your drive with "hdparm -i /dev/hda" to
>see what modes your drive support.
>
>From the hdparm man page:
>
>...
>
> -X Set the IDE transfer mode for newer
>(E)IDE/ATA2
> drives. This is typically used in
>combination with
> -d1 when enabling DMA to/from a drive
>on a sup<AD>
> ported interface chipset (such as the
>Intel 430FX
> Triton), where -X34 is used to select
>multiword DMA
> mode2 transfers. With systems which
>support Ultra<AD>
> DMA burst timings, -X66 is used to
>select UltraDMA
> mode2 transfers (you'll need to prepare
>the chipset
> for UltraDMA beforehand). Apart from
>that, use of
> this flag is seldom necessary since
>most/all modern
> IDE drives default to their fastest
>PIO transfer
> mode at power-on. Fiddling with this
>can be both
> needless and risky. On drives which
>support alter<AD>
> nate transfer modes, -X can be used to
>switch the
> mode of the drive only. Prior to
>changing the
> transfer mode, the IDE interface should
>be jumpered
> or programmed (see -p flag) for the new
>mode set<AD>
> ting to prevent loss and/or
>corruption of data.
> Use this with extreme caution! For the
>PIO (Pro<AD>
> grammed Input/Output) transfer modes
>used by Linux,
> this value is simply the desired PIO
>mode number
> plus 8. Thus, a value of 09 sets
>PIO mode1, 10
> enables PIO mode2, and 11 selects PIO
>mode3. Set<AD>
> ting 00 restores the drive's
>"default" PIO mode,
> and 01 disables IORDY. For multiword
> DMA, the
> value used is the desired DMA mode
>number plus 32.
> for UltraDMA, the value is the
>desired UltraDMA
> mode number plus 64.
>
>...
>
>It says that most modern drives default to the fastest
>mode; he, he, he, I had always have to use hdparm to
>get an average of only *twice* the default performance
>with all the drives I have ever had. ;-)
>
>--- Pixel <[EMAIL PROTECTED]> wrote:
> > "bobby dowling" <[EMAIL PROTECTED]> writes:
> >
> > > What do you mean the -d flag without the -X flags?
> > >
> > > So, you can say -dX and those WD drives that froze
> > the system before would
> > > work?
> >
> > nope, froze anyway here :(
> >
>
>
>=====
>________________________
>Eugenio Diaz, BSEE/BSCE
>Linux Engineer
>[EMAIL PROTECTED]
>
>__________________________________________________
>Do You Yahoo!?
>Send instant messages with Yahoo! Messenger.
>http://im.yahoo.com/
>
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
