Ken Schneider wrote:
Please DO NOT reply to the list and the poster. Where do you think I got your original request from? The list! And how any copies do I need in reply - ONE.
Thanks
-----Original Message----- From: Basil Chupin
To: Kenneth Schneider Cc: Suse Linux Date: Sat, 17 Apr 2004 19:05:03 +1000 Subject: Re: [SLE] Newbie Question - Adding Hard Drive. Kenneth Schneider wrote:
On Fri, 2004-04-16 at 11:53, David Rankin wrote:
Mates,
I have 8.2 pro on /hda, cdrw on /hdc and another 20G drive I want
to add
as /hdc and move the cd to /hdd. The 20G drive has 9.0 pro on it that
I
thrashed. After I install the 20 G as /hdc, I would like get your
help with
just the basic names of the cmd line tools to do the following.
(1) partition and reformat /hdc to ext2 as the /home partition; (2) move my existing /home from /hda to /hdc; and (3) hopefully not screw up my 8.2 install on /hda.
I can handle the /etc/fstab entries.
Just a link to a page with this info would be fine.
I would recommend connecting the drive to /dev/hdb rather then mix a cdrw drive and a hard drive on the same ide controller. You'll have
far
fewer problems I/O that way.
Could you please spell out what sort of "far fewer prblems" will be avoided by doing this?
as root in run level 3:
(1) install the hard drive on hdb (2) fdisk the drive as one partition (you can use YaST for this and
#3)
(3) mkfs.ext2 /dev/hdb1 (4) mount the partition to a temporary mount point mount /dev/hdb1 /temp (5) copy the /home data to the temp mount point (cd /home;tar cf - *)|(cd /temp;tar xvf -) (6) umount /temp (7) mv /home /home.old (assuming on the root filesystem) (8) add mount point in /etc/fstab (9) mkdir /home; mount /dev/hdb1 /home (10) login as user on another tty to test
If you have no errors after logging in as a normal user you should be safe to go. And you never needed to reboot after adding the 2nd drive just init 5 as root.
OK, so on this very rare occasion I forgot to wipe your e-mail address from my message, but what the heck are you on about getting my "original request from?"? What 'my original request'? I didn't make a request. All I want you to do is to answer my question which is what problems are to be avoided by not putting a CDROM, or similar, on the same cable as a HD. -- All Scottish food is based on a dare.
* Basil Chupin
Ken Schneider wrote:
Please DO NOT reply to the list and the poster. Where do you think I got your original request from? The list! And how any copies do I need in reply - ONE.
....
OK, so on this very rare occasion I forgot to wipe your e-mail address from my message, but what the heck are you on about getting my "original request from?"? What 'my original request'? I didn't make a request.
All I want you to do is to answer my question which is what problems are to be avoided by not putting a CDROM, or similar, on the same cable as a HD.
He was requesting that you not be so *rude*, such as sending him duplicate posts. So you send a 97 line *full* *quote* to a 3 line request. I am sure that you will receive a great deal of help. Perhaps you should try a baseball bat. -- Patrick Shanahan Registered Linux User #207535 http://wahoo.no-ip.org @ http://counter.li.org HOG # US1244711
Patrick Shanahan wrote:
* Basil Chupin
[04-17-04 09:50]: Ken Schneider wrote:
Please DO NOT reply to the list and the poster. Where do you think I got your original request from? The list! And how any copies do I need in reply - ONE.
....
OK, so on this very rare occasion I forgot to wipe your e-mail address from my message, but what the heck are you on about getting my "original request from?"? What 'my original request'? I didn't make a request.
All I want you to do is to answer my question which is what problems are to be avoided by not putting a CDROM, or similar, on the same cable as a HD.
He was requesting that you not be so *rude*, such as sending him duplicate posts.
So you send a 97 line *full* *quote* to a 3 line request. I am sure that you will receive a great deal of help. Perhaps you should try a baseball bat.
Oh, is that what it was all about. And I thought it was something really serious and life-threatening. And it wasn't me looking for any help, by the way. I was simply asking for clarification of a statement. Cheers. -- I am not young enough to know everything.
On 04/17/2004 10:39 PM, Basil Chupin wrote:
All I want you to do is to answer my question which is what problems are to be avoided by not putting a CDROM, or similar, on the same cable as a HD.
Since most CDROMs are not as fast as a HD, it will slow down the bus speed for both. Therefore it is suggested to put HD with other fast HD on the same bus, a slower HD on the sec. controller with the slower CDROM. This allows all to work at max speed. HTH. -- Joe Morris New Tribes Mission Email Address: Joe_Morris@ntm.org Web Address: http://www.mydestiny.net/~joe_morris Registered Linux user 231871 God said, I AM that I AM. I say, by the grace of God, I am what I am.
Joe Morris (NTM) wrote:
On 04/17/2004 10:39 PM, Basil Chupin wrote:
All I want you to do is to answer my question which is what problems are to be avoided by not putting a CDROM, or similar, on the same cable as a HD.
Since most CDROMs are not as fast as a HD, it will slow down the bus speed for both. Therefore it is suggested to put HD with other fast HD on the same bus, a slower HD on the sec. controller with the slower CDROM. This allows all to work at max speed. HTH.
The way I interpret a few technical papers I've read is that because of the technical characteristics of IDE it is not possible to read and write simultaneously on the same IDE cable/port. Putting 2 HDs on the same cable therefore gains absolutely nothing if one is transferring data between them - which is why I put my HDs as masters on the 2 IDE ports with the CDROMs/DVDRWs/CDRWs as slaves. Cheers. -- I am not young enough to know everything.
The Monday 2004-04-19 at 01:52 +1000, Basil Chupin wrote:
The way I interpret a few technical papers I've read is that because of the technical characteristics of IDE it is not possible to read and write simultaneously on the same IDE cable/port. Putting 2 HDs on the same cable therefore gains absolutely nothing if one is transferring data between them - which is why I put my HDs as masters on the 2 IDE ports with the CDROMs/DVDRWs/CDRWs as slaves.
If you do speed tests on them using hdparm you will probably see they are quite slower that way - unless you are lucky. Experimenting is definite, theory is not. About your first question: /usr/share/doc/howto/en/mini/Hard-Disk-Upgrade.gz -- Cheers, Carlos Robinson
Carlos E. R. wrote:
The Monday 2004-04-19 at 01:52 +1000, Basil Chupin wrote:
The way I interpret a few technical papers I've read is that because of the technical characteristics of IDE it is not possible to read and write simultaneously on the same IDE cable/port. Putting 2 HDs on the same cable therefore gains absolutely nothing if one is transferring data between them - which is why I put my HDs as masters on the 2 IDE ports with the CDROMs/DVDRWs/CDRWs as slaves.
If you do speed tests on them using hdparm you will probably see they are quite slower that way - unless you are lucky. Experimenting is definite, theory is not.
About your first question:
/usr/share/doc/howto/en/mini/Hard-Disk-Upgrade.gz
Thanks, Carlos, I will go and read this. And read up on how to use hdparm. Cheers. -- I am not young enough to know everything.
Carlos E. R. wrote:
The Monday 2004-04-19 at 01:52 +1000, Basil Chupin wrote:
The way I interpret a few technical papers I've read is that because of the technical characteristics of IDE it is not possible to read and write simultaneously on the same IDE cable/port. Putting 2 HDs on the same cable therefore gains absolutely nothing if one is transferring data between them - which is why I put my HDs as masters on the 2 IDE ports with the CDROMs/DVDRWs/CDRWs as slaves.
If you do speed tests on them using hdparm you will probably see they are quite slower that way - unless you are lucky. Experimenting is definite, theory is not.
About your first question:
/usr/share/doc/howto/en/mini/Hard-Disk-Upgrade.gz
Further to my earlier response, I've now looked at this How-To and I can't see anything there to contradict what I said. The How-To talks about removing another device from the same cable to be able to install another drive (to copy the system from 1 drive to the new one) but this is in the context, the way I read it, that the controller is supporting 2 EIDE devices. The article is also written some 4 years ago (2000). I haven't read the article re hdparm so haven't yet done any practical testing. Cheers. -- I am not young enough to know everything.
The Thursday 2004-04-29 at 02:07 +1000, Basil Chupin wrote:
If you do speed tests on them using hdparm you will probably see they are quite slower that way - unless you are lucky. Experimenting is definite, theory is not.
About your first question:
/usr/share/doc/howto/en/mini/Hard-Disk-Upgrade.gz
Further to my earlier response, I've now looked at this How-To and I can't see anything there to contradict what I said. The How-To talks
Oops, sorry. The howto was intended for the original poster (David Rankin), who wanted to add/move disks/partitions.
I haven't read the article re hdparm so haven't yet done any practical testing.
Option -t -T if my memory is correct. Speed may be different for each partition given to it (or overall disk). I found that placing my HD on the same cable as the cdwriter or the dvd made the HD much slower than placing both HD on the same cable, and CDW and DVD on the other: noticeably so. I run the tests from the rescue system, I think. -- Cheers, Carlos Robinson
participants (4)
-
Basil Chupin
-
Carlos E. R.
-
Joe Morris (NTM)
-
Patrick Shanahan