Install now, upgrade later?

[ekul taylor]

It's actually really easy to install a kernel if you use the repositories.
 dpkg adds your kernel to the list of available kernels so if for any reason
you have trouble you can simply use grub to boot into your old kernel.
 Among all package installations a new kernel is among the safest since
reverting is as easy as hitting escape during grub and choosing the old
kernel.

I'm not sure what package mixture you have so I can't really deal with that
but installing the PAE kernel is as simple as:
sudo aptitude install linux-server
This will install the kernel and any necessary headers.  If you want to run
the karmic kernel but nothing else from karmic you'll have to do some apt
pinning.

As for the reason you don't have the pae kernel I believe it is only
selected by default when installing via the server cd.  Any other method you
have to add it via apt after install.

On Sat, Mar 20, 2010 at 12:34 PM, David Groos <djgroos at gmail.com> wrote:

> I find I'm not using the server kernel which surprises me--isn't that the
> one that the 'alternate CD' used?  Shouldn't that be the standard install
> for a thin client server using Edubuntu?
>
> So, how do I go about installing this kernel?  I used the link that Alkis
> provided and I could download the kernel.  I couldn't access it via
> Synaptic, probably because I've set sources to Jaunty but I wasn't sure how
> to set some to Karmic.  Any link/suggestion would be appreciated!  I don't
> want to willy-nilly upgrade a kernel, sounds like risky business.
>
> Thanks!
> David
>
> On Mar 19, 2010, at 4:35 PM, ekul taylor wrote:
>
> Run
> uname -r
> which will tell you the specific build of the kernel you are running.  If
> the PAE kernel is in use it will have -pae in the name.  if you don't see
> that you'll need to install the linux-server package.
>
> You can also run free -m as a check to ensure all your ram is being
> addressed.  However much you think there is should match the total column in
> MB.  If it doesn't something isn't quite working.
>
> On Fri, Mar 19, 2010 at 5:07 PM, David Groos <djgroos at gmail.com> wrote:
>
>> Thanks Ekul for the further info, I get it now.  I think I'll use solution
>> #1 below--sounds like it is doable and will help out with what I need for
>> these last couple of months of school then over summer power-up with a new
>> Lucid install.  I'm pretty sure I'm currently using the server install.  How
>> can I tell?
>>
>> David
>>
>>
>> On Fri, Mar 19, 2010 at 8:35 AM, ekul taylor <ekul.taylor at gmail.com>wrote:
>>
>>> The 32/64 bit question is very complicated.  Hopefully I can help.
>>>
>>> Any AMD Opteron or Intel Xeon server made in the past few years has
>>> support for running 32 bit and 64 bit code (even at the same time).  So you
>>> could clone your existing server and it would work fine but you might not be
>>> able to take advantage of all of your RAM.
>>>
>>> If you have more then 4 GB of RAM you have 3 options to use it all:
>>>
>>> 1. Clone your 32 bit server install but install the linux-server package
>>> if it isn't already used.  This kernel is PAE enabled which is something
>>> Intel developed to let 32 bit processors address more then 4 GB of RAM.  It
>>> does have slight performance issues and no one process can address more then
>>> 4 GB of RAM but for a terminal server this isn't important.
>>>
>>> 2.  Clone your 32 bit server but install and run a 64 bit kernel.  This
>>> can be tricky dependency-wise so I wouldn't recommend it so I won't outline
>>> the many steps here.
>>>
>>> 3.  Install a 64 bit version of edubuntu and reuse
>>> your configuration files from your old server.  It's pretty easy to do since
>>> except for /etc/modules.d and /etc/modprobe.conf none of the config files
>>> are about the kernel.  You do have to build your chroot a little differently
>>> if you use this option as thin clients will almost certainly need a 32 bit
>>> boot environment.  To do this you use the command:
>>> ltsp-build-client --arch i386
>>> instead of just ltsp-build-client.  This is what I option I would use
>>> when installing lucid but if you're just going to be using karmic for a few
>>> months option 1 will involve the least setup.
>>>
>>>
>>> On Fri, Mar 19, 2010 at 9:11 AM, David Groos <djgroos at gmail.com> wrote:
>>>
>>>> Confusion compounds...
>>>>
>>>> the one thing I might have understood...
>>>>
>>>>>
>>>>> If you install this kernel in Jaunty/Karmic, then you can access more
>>>>> than 4 Gb of RAM while having 32 bit systems/OS:
>>>>> http://packages.ubuntu.com/karmic/linux-server
>>>>>
>>>>> So you can do that either in the old or the new server.
>>>>>
>>>>
>>>> You're saying that:
>>>> --I could install the above kernel onto my current 32 bit hardware.
>>>> --then I could either:
>>>> --------install up to 64 Gb RAM on old server
>>>>                       or...
>>>> --------then I could clone this new setup to the new server.
>>>> ?
>>>>
>>>> Thanks,
>>>> David
>>>>
>>>>
>>>> --
>>>> edubuntu-users mailing list
>>>>
>>>> edubuntu-users at lists.ubuntu.com
>>>> Modify settings or unsubscribe at:
>>>> https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
>>>>
>>>>
>>>
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://lists.ubuntu.com/archives/edubuntu-users/attachments/20100320/7f753460/attachment.htm