Strange things with my hard drive

[Kerry Hoath]

If the system boots and works then leave it alone.
That is a strange setup but should be fine. Yes the cable should be an 80-wire
cable. if you run a test
hdparm -t /dev/hdx
replace hdx with your hard drive letter and get >16 megabytes per second udma
is active. If it is not then run
hdparm -d1 /dev/hdx
then run the hdparm -t /dev/hdx
your system board will either give you 2-3 times the drive speed or Linux will
shut down dma if it is not reliable.

Regards, Kerry.
On Mon, Feb 25, 2002 at 03:27:27PM +0100, Victor Tsaran wrote:
> Hi, Kerry!
> So, if I leave my setup as it is working now, that is, HDD as a master on
> IDE1 and CDROM as a master on IDE0, is it going to work worse than in a
> regular setup? Since it is working, I thought I would not want to touch it
> again.
> Also, since the cable came with my motherboard, which is supports ATA100,
> can I assume that this is a 80-wire cable?
> Vic
> 
> ----- Original Message -----
> From: "Kerry Hoath" <kerry at gotss.net>
> To: <speakup at braille.uwo.ca>
> Sent: Monday, February 25, 2002 4:04 AM
> Subject: Re: Strange things with my hard drive
> 
> 
> > This is not a good idea unless ide channels are limited.
> > The reason for this is that once one device is accessing the ide bus the
> other
> > device doesn't get a look in until the first device has finished.
> > The practical upshot of this is that installs from cdromt o hard disk go
> really slowly because
> > both devices want contention on the ide bus.
> > With the multitude of IDE devices these days it can be difficult to get
> the combinations right.
> > Slaving a cdrom to a burner is ok provided you don't want to do on-the-fly
> > copying with your cdrom to burner.
> > Slaving a burner to a hard drive can also cause problems if your i/o
> subsystem is not up to
> > keeping both devices busy.
> > If you have a cdrom only put it master on the secondary controller if you
> don't have 2 hard drives or put it as
> > slave on the secondary if you have a hard drive on both controllers.
> > If you have a cdorm and a burner I cable like this:
> > primary master, hard drive.
> > Primary slave, empty
> > Secondary master, cd burner, secondary slave, cdrom.
> > I don't on-the-fly copy from cd to burner, I let the computer
> > put it on the hard drive as an intermediate step.
> >
> > Regards, Kerry.
> > On Sun, Feb 24, 2002 at 08:02:31PM -0500, Alex Snow wrote:
> > > I've never bilt a computer, but i've taken about 100 apart.  In most
> cases,
> > > and most of the machines I gutted were older ones, the cdrom is slaved
> to
> > > the hard drive witch is the master.
> > >
> > >
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> > >
> >
> > --
> > Kerry Hoath:  kerry at gotss.net kerry at gotss.eu.org or
> kerry at gotss.spice.net.au
> >
> > _______________________________________________
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> >
> >
> 
> 
> 
> 
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-- 
Kerry Hoath:  kerry at gotss.net kerry at gotss.eu.org or  kerry at gotss.spice.net.au