Ubuntu 32-bit or 64-bit, Should I upgrade? Which iso version should I download?

Ubuntu releases each april and october a new stable release. It is numbered by the year and month in this format for let’s take 2013: 13.04 and 13.10. And for 2014 the newest release is 14.04. When a release is labelled LTS it stands for Long Term Support. Support refers to that Ubuntu releases bug fixes that you can update your system with, not free technical support.

Ubuntu 14.04 Terminal-32bit or 64-bit CPU with lscpu

Ubuntu 14.04 Terminal-32bit or 64-bit CPU with lscpu

When Ubuntu 14.04 was released I had a series of questions which you might also have when considering an update or installing Ubuntu from scratch.
+Do I have a 32-bit or 64-bit processor?
+Which Ubuntu version should I download?
+Which Ubuntu version do I have am I running on my PC?
+Can I upgrade from a 32-bit install directly to a 64-bit version?
+Can I Install Amd64 Ubuntu On My Intel 64-bit Machine?

+|– Do I have a 32 bits or 64 bits processor?
Open the Terminal (keyboard shortcut: Ctrl+Alt+T)

Enter the command:
lscpu

Press Enter.
A 64-bit CPU will be able to run in both 32-bit and 64-bit modes, while a 32-bit CPU will only be able to run in 32-bit mode.
Reference: http://www.howtogeek.com/165144/htg-explains-should-you-use-the-32-bit-or-64-bit-edition-of-ubuntu-linux/

+|– Which Ubuntu version should I download?
If you already have Ubuntu installed you can update your Ubuntu version to the newest by using the Software Updater. If you are using a very old Ubuntu version such as 10.10 you will not be able to update directly to a much higher version such as 12.10 with the software updater. For me it didn’t work when I tried that on a few different PCs.

Let’s say you want to manually install a new Ubuntu version, you can go this page:
http://www.ubuntu.com/ and click through to the download page and select your appropriate version. This page makes it way easier to download the version that you require.

If you want to select some precise version you can go to this page:
http://releases.ubuntu.com/14.04/ (Note that this link brings you to the Ubuntu release page for 14.04 – if you are reading this article a few years later just google ubuntu releases.)

From that list you can choose your appropriate version. When I saw this list I had the question “Can I Install Amd64 Ubuntu On My Intel 64-bit Machine?” which I will answer a bit later.

+|– Which Ubuntu version do I have am I running on my PC?
Open the Terminal (keyboard shortcut: Ctrl+Alt+T)

Enter the command:
lsb_release -a

and hit enter.
Your version will be shown on the Description line.
Reference: https://help.ubuntu.com/community/CheckingYourUbuntuVersion

or try this:
If you already have Ubuntu installed open the terminal and type:
uname -m

and hit enter.
If the response is i686, you have a 32-bit version of Linux.
If the response is x86_64, you have a 64-bit version of Linux.

Windows users click here to check if you have a 32-bit or 64-bit version http://www.howtogeek.com/howto/21726/how-do-i-know-if-im-running-32-bit-or-64-bit-windows-answers/

+|– Can I upgrade from a 32-bit install directly to a 64-bit version?
After checking my PC I figured out that I am running a 32-bit Ubuntu version and was wondering if I could just update to a 64-bit version. You can’t do that via the software updater and it’s also not recommended to do such an update. It is better you do an install from scratch.

Reference: http://askubuntu.com/questions/5018/is-it-possible-to-upgrade-from-a-32bit-to-a-64bit-installation?lq=1

+|– Can I Install Amd64 Ubuntu On My Intel 64-bit Machine?
Simply said – YES YOU CAN.
i386 or x86 refers to a 32-bit architecture.
AMD64/EM64T/x86-64/x64 refers to a 64-bit architecture.

The first AMD64-based processor, the Opteron, was released in April 2003.
That’s why the AMD is used

Industry naming conventions
Since AMD64 and Intel 64 are substantially similar, many software and hardware products use one vendor-neutral term to indicate their compatibility with both implementations. AMD’s original designation for this processor architecture, “x86-64”, is still sometimes used for this purpose,[4] as is the variant “x86_64”.[5][6] Other companies, such as Microsoft[8] and Sun Microsystems/Oracle Corporation,[7] use the contraction “x64” in marketing material.
Reference from: http://en.wikipedia.org/wiki/Amd64#AMD64

Also check: 64-bit processor time line
http://en.wikipedia.org/wiki/64-bit_computing#64-bit_processor_timeline

Ubuntu filename: ubuntu-14.04-desktop-amd64.iso 17-Apr-2014 01:35 964M Desktop image for 64-bit PC (AMD64) computers (standard download)
http://releases.ubuntu.com/14.04/

Reference: http://www.maketecheasier.com/can-i-install-amd64-ubuntu-on-my-intel-64-bit-machine/

Additional references:
32-bit vs. 64-bit: What’s the Difference?
How Do I Know if I’m Running 32-bit or 64-bit Linux? [Answers] Checking Your Ubuntu Version
Is it possible to “upgrade” from a 32bit to a 64bit installation?
How to burn a DVD on Ubuntu
Can I Install Amd64 Ubuntu On My Intel 64-bit Machine? [MTE Explains] Download Ubuntu Desktop
Ubuntu 14.04 LTS (Trusty Tahr)
HOW TO INSTALL MATE 1.8 IN UBUNTU

 

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