La Boina Roja

Linux, the struggles are real!


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How to check if you can run CentOS 64-bit

As described earlier, in order to run a 64-bit version of CentOS, you need to have the following:

  • a processor that can handle 64-bit
  • 4 GB RAM

 

I’m assuming that you are Windows user. Let’s face it, it is a Microsoft world out there. You Mac OS X users Photobucket please do not bother putting down your Starbucks beverage and type a hastily reply, you might ruin your manicured nails. And yes, I am addressing the “male” userbase of Mac OS X  here tooPhotobucket

So, in order to check if your computer can run a 64-bit version of CentOS. You should go to Microsft Support and type in the search box ”How to determine if I can run 64-bit Windows X”.  Replace “X” with the Windows version you are currently using; i.e. Vista,  7, or 8. In the search results you’ll find instructions in how to determine wether you can run 64-bit or not.

I would like to point out something Photobucket in the ”determining” process you might see the following dialogue box:

Don’t let “32-bit Operating System” in this dialogue box fool you!  It doesn’t mean that you can’t run 64-bit, it means that the current Operating System is 32-bit. Don’t be ashamed, it fooled me too Photobucket  and quite a few times I might addPhotobucket

In this specefic case, the dialogue box is not from my system, this user could run a 64-bit Operating System if he added 1 GB of RAM Photobucket His processor can run 64-bit, as you can read here.


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What you need to know about the difference between 32-bit and 64-bit in Linux

The difference between 32-bit and 64-bit lays, basically, in how much RAM your processor/CPU (=brain of your computer) can handle. The more bits your CPU/processor can handle the more, quicker, efficient and accurate it will work Photobucket32-bit processors can handle up to 4 GB of RAM and 64-bit processors can handle above 4 GB to 128 GB of  RAM.

Yup, this means that in order to run a 64-bit version of CentOS you need to have at least 4 GB of Ram. Read this, if you are not sure if you can run 64-bit on your computerPhotobucket

In Linux (generally speaking), you need to run a 64-bit version of (for example) CentOS to run software/applications written for 64-bit systems. Wait, don’t give me the “like duh Photobucket” reaction yet!

The good thing about having a 64-bit environment is; you will be able to run 32-bit software/applications too Photobucket Unfortunately, it doesn’t work the other way round.

Guys, this is a very simplefied explanation. I’ve read articles regarding this subject which were so 1337, my brain exploded from just reading them Photobucket


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Which CentOS flavour to install

Always go for the latest version, which at the moment of writing is 6.3.

The earlier versions like 4 are still avalaible but they are full of bugs and security hazards, which are solved in later releases. If you are a 1337 h4x0r Photobucket and particularly enjoy headaches, by all means go for an earlier version. Why else would one want to waste hours killing bugs Photobucket Chances are, when you are on this blog you are far from being 1337 Photobucket  So stick with the latest version,  it’s the safest plus there is more active support to find online.

Then there is the bit thing to deal with, CentOS comes in a 32-bit version and 64-bit version. You can read about the differences between those versions here.

Since I’ve have it in my head had to take some Red Hat exams, I am installing the 64-bit version. According to Michael Jang you do need a 64-bit system to prepare for the exams. So 64-bit it is Photobucket