RE: SATA drive problem

Silly question, but if it's a SATA drive, how did you install it on an IDE
slot ?



_____

From: plug-discuss-bounces@lists.plug.phoenix.az.us
[mailto:plug-discuss-bounces@lists.plug.phoenix.az.us] On Behalf Of Mark
Jarvis
Sent: Friday, October 02, 2009 12:49 PM
To: Main PLUG discussion list
Subject: Re: SATA drive problem



Final result:

Here's a better statement of what I thought were my problems with the new
SATA drive on Linux:
Booting into Ubuntu 9.04, Gnome's File Browser showed ghosts of the old
channel 0 Master--complete with the labels of the old partitions, and did
not show the new drive. When I brought up Gnome's gparted, it saw the new
drive just fine--but as sda! I had expected almost anything--except sda.
(POST identifies it as Channel 2 Master.)

Solutions:
I found out that starting at least one major kernel revision ago, drives are
enumerated in the order that they are discovered during the boot process. So
the SATA drive was the first drive found. Then, when I re-booted after
updating my system, Gnome's file browser dropped the ghosts and found the
new SATA drive OK, so that problem went away. Problems solved, I learned a
few things, and I didn't have to re-install. Except for installing updates
and re-booting, I didn't have to do anything to Linux for it to use the SATA
drive.

Also, apparently I'm not the only person to have found that if sda is also
the Setup boot drive, then a linux installation on sdb will alter sda's MBR.
I still don't understand all I know on this, but I'm going to continue to be
a pragmatist: "If it works, use it."

Again, Thanks to all who responded,

Mark Jarvis

Eric Shubert wrote:

So would you care to fill us in a bit?



Mark Jarvis wrote:



Thanks to all those who have responded. I think that I now have a pretty

fair idea of the way Linux today assigns device labels. Also, when I

re-booted after updating my system, the file browser dropped the ghosts

and found the new SATA drive OK, so that problem went away.



Once again, thanks to all who responded.



-mj-





Mark Jarvis wrote:



Up until a couple of days ago, I had 3 EIDE drives and POST reported

my hard drives:

    IDE Channel 0 Master     a 120 GB drive

    IDE Channel 0 Slave       a 120 GB drive

    IDE Channel 1 Master     a 160 GB drive

    IDE Channel 1 Slave        a DVD

    IDE Channel 2 Master     None

    IDE Channel 3 Master     None

Simplifying things, channel 0 Master has my Windows Installation,

Channel 0 Slave my Linux stuff, and Channel 1 Master is a backup/clone

of Channel 0 Master. Ubuntu sees the three drives as sda, sdb, and sdc.



Monday I picked up a couple of 1.0 TB SATA drives. Starting slowly, I

added one to Channel 2. I cloned the Windows drive (Channel 0 Master)

to it, pulled the power plug on Channel 0 Master, and changed the boot

sequence in Setup. I also changed the label on one of the partitions

on the new drive. POST reports:

    IDE Channel 0 Master     None

    IDE Channel 0 Slave       a 120 GB drive

    IDE Channel 1 Master     a 160 GB drive

    IDE Channel 1 Slave       a  DVD

    IDE Channel 2 Master     a SATA 1 TB drive

    IDE Channel 3 Master     None

Windows works pretty much OK. Booting into Ubuntu 9.04, I was

surprised that Gnome's File Browser shows ghosts of the old channel 0

Master--complete with the labels of the old partitions, and does not

show the new drive. I brought up Gnome's gparted. It saw the new drive

just fine--as sda! I had expected almost anything--except sda. This is

not a "real work" Linux installation and besides, /home is in a

different partition, so I could just re-install and that would

probably fix things, but I'd rather make what's there work correctly.



Questions:

    1) Why did a SATA drive on Channel 3 show up as sda?

    2) How can I kick Gnome's File Browser into dropping the ghosts 

and showing the contents of the new drive?



I guess that all of my admin/reference books are out of date, because

I can't find anything in them that helps. The MAN pages would probably

help, but I don't know where to start.



Any help, pointers to where I can find explanations, etc. will be much

appreciated.



Thanks,



Mark Jarvis



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