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jamesbon
August 30th, 2010, 09:53 AM
Is it possible to convert ubuntu 32 bit to 64 bit on an existing installation.

presence1960
August 30th, 2010, 12:09 PM
Is it possible to convert ubuntu 32 bit to 64 bit on an existing installation.

no. You must do a clean install.

TNT1
August 30th, 2010, 02:47 PM
no. You must do a clean install.
dammit. Really?

howefield
August 30th, 2010, 02:48 PM
Really?

Really.

TNT1
August 30th, 2010, 02:52 PM
Really.


Great. I'll wait till April next year then.

dino99
August 30th, 2010, 04:18 PM
why not pae kernel instead ? that way you can fully use your ram

jamesbon
August 30th, 2010, 04:22 PM
Please tell some thing that I understand.

dino99
August 30th, 2010, 04:25 PM
Please tell some thing that I understand.

what are you not understanding ? may be you need to glance at synaptic kernel packages first

howefield
August 30th, 2010, 04:35 PM
Please tell some thing that I understand.

Please tell us something that you don't understand ?

jamesbon
August 31st, 2010, 11:13 AM
What I understand till now is that I need to format every thing and do a clean install.
If that is the case then I want to keep a copy of the existing 32 bitOS on my machine.
So how do I go about installing in an empty partition keeping one already existing.
I asked this question here and after one reply I am waiting for what more to be done.
http://ubuntuforums.org/showthread.php?t=1564113
Can any one suggest any thing on above thread?

In past I have done this with Fedora and OpenSuse etc but I am not clear for many things
1)Partitioning schema how to find out which partitions are alive in existing Ubuntu installation
2)Grub entries since I am not clear with UUID part.

ilovelinux33467
August 31st, 2010, 11:17 AM
you can make a backup of your home folder if you do decide to reinstall to 64 bit ubuntu so you can copy all your documents back to your new installation. I don't think the same thing go's for apps just documents

rawlins02
August 31st, 2010, 03:05 PM
I'm also considering fresh install of 64-bit, just a few weeks after installing 32-bit Lucid. Got a lot of packages installed. Curious how one could use Synaptic's "Generate Package Download Script" to get proper 64-bit packages of everything I now have re-installed. I envision one command (or click) and presto!

oldfred
August 31st, 2010, 06:00 PM
from lovinglinux - use dpkg to list installed apps
http://ubuntuforums.org/showpost.php?p=7157175&postcount=5
http://kevin.vanzonneveld.net/techblog/article/restore_packages_using_dselectupgrade/

and using synaptic
http://ubuntuforums.org/showthread.php?t=1057608

You may also want to and then be sure to include in your backup of home, I run this as part of my backup so I have the most current versions in my backups:
dpkg --get-selections > ~/ubuntu-files
cp /etc/apt/sources.list ~/sources.list.backup

rawlins02
August 31st, 2010, 07:31 PM
Very handy oldfred. But would there be inconsistencies if one saves these package lists from a 32-bit system and then installs those packages to a fresh install of 64-bit? In other words, are 32-bit versions different from 64-bit versions, and would 32-bit packages get installed on the 64-bit OS? Or perhaps Ubuntu and Synaptic have that all figured out.

oldfred
September 1st, 2010, 01:55 AM
The list it creates are just the names. It is not the versions. So if reinstalling to a new system it will install the latest updated version and if you are on a 64 bit system it will install the 64 bit version. Only if there is not a program (obsoleted) will it not install.

If you want a list with versions

List with explanations of programs, not for reinstall
dpkg -l > ~/Desktop/installed_programs.txt

PaulReaver
September 1st, 2010, 02:04 AM
Great. I'll wait till April next year then.

wtf? Have I missed something, are they not releasing meerkat (10.10) in october?

tommcd
September 1st, 2010, 02:26 AM
wtf? Have I missed something, are they not releasing meerkat (10.10) in october?
Yes, they will be releasing Maverick 10.10 in October:
https://wiki.ubuntu.com/MaverickReleaseSchedule

howefield
September 2nd, 2010, 03:21 PM
wtf? Have I missed something, are they not releasing meerkat (10.10) in october?

He might just like the name... or simply not want maverick.

http://www.markshuttleworth.com/archives/478

Maverick Meerkat due 10th October 2010
Natty Narwhal due 28th April 2011

TNT1
September 2nd, 2010, 03:49 PM
wtf? Have I missed something, are they not releasing meerkat (10.10) in october?

Yes, they are, but I'm a confirmed LTS dude...

TNT1
September 2nd, 2010, 03:52 PM
or simply not want maverick.

1

Exactly. As previously noted somewhere on this forum, Meerkats scare the cr@p out of me. Which is weird, cause we used to live in the bush, and had a cobra at the bottom of the tree that my tree-house was in, and I saw it kill a meerkat from a sort of birds eye position...

howefield
September 2nd, 2010, 04:34 PM
Yes, they are, but I'm a confirmed LTS dude...

Then you won't want Natty either...

TNT1
September 2nd, 2010, 04:36 PM
Then you won't want Natty either...

Yeah, but I'll put it on a test machine at least....

jamesbon
September 3rd, 2010, 06:48 PM
Here is what I did
I had an empty partition on my machine worth 45 GB so I installed the 64 bit Ubuntu 10.04 so that I can try things in it.I also have 32 bit installed so that if some thing goes wrong I can always revert back.
Consider having such a feature in next releases of Ubuntu.