Thanks guys, this would work. FYI, as to "why", well it is a mission critical system that has been up and running for a while (on 4.1) but now we to update it to minimum 4.2 to meet some requirements, so we want to keep the changes to a minimum. As for security issues, the way it is setup currently that is not an issue, however it will be soon replaced with latest version of 5.x


From: James Hogarth <james.hogarth@gmail.com>
To: CentOS mailing list <centos@centos.org>
Sent: Fri, May 14, 2010 6:09:41 AM
Subject: Re: [CentOS] upgrading to a minor release 4.1 to 4.2

On 14 May 2010 13:51, Kwan Lowe <kwan.lowe@gmail.com> wrote:
> On Fri, May 14, 2010 at 12:37 AM, sheraz naz <sheraznaz@yahoo.com> wrote:
>> Hi,
>>
>> I need to upgrade a system running 4.1 to 4.2, but before I do I want to
>> list out all the packages that will be updated/installed/removed. I can run
>> up2date -l to get a list of updates but does that show packages that need to
>> be installed and removed as well or just the updates?
>>
>> Second, how would I go about upgrading 4.1 to 4.2 instead of 4.8 (i.e.
>> latest update).
>
> OK, ignoring the "why??", the approach would be to get the 4.2 DVD ISO
> then mount it as a package repository. Point your system to that
> repository then run the update.
> _______________________________________________
> CentOS mailing list
> CentOS@centos.org
> http://lists.centos.org/mailman/listinfo/centos
>

Some relevant information...

from http://mirror.centos.org/centos-4/4.2/readme

This directory (and version of CentOS) is depreciated.  For normal users,
you should use /4/ and not /4.3/ in your path. Please see this FAQ
concerning the CentOS release scheme:

http://www.centos.org/modules/smartfaq/faq.php?faqid=34

If you know what you are doing, and absolutely want to remain at the 4.3
level, go to http://vault.centos.org/ for packages.

So you *could* use http://vault.centos.org/4.2/ for your repository
information and get updates to the baseline of 4.2 and no further....
but then you will be missing any bug or security fixes for the last 4
years give or take.

James
_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos