Installing CentOS 6.3 in Virtual Box (Minimal install) + Screenshots

Posted: October 25, 2012 in Linux / Redhat
Tags: , , , ,

I have just installed CentOS 6.3 64-bit (minimal)  in Virtual Box. This is how I installed CentOS in Virtual Box. Hope this helps.

[Update: The updated version of this article with screenshots for CentOS 6.7 can be found here.]


  1. CentOS 64-bit ISO : Download Link (~330 MB)
  2. Virtual Box : Download Link (~90 MB)
  3. Atleast 8 GB -of free disk space

Installation Procedure:

First, thing you need to  do is to set up your Virtual Box. Go ahead download and install Virtual Box (the download link is given above in the requirements).

Press “New“, Type as “CentOS 64 bit” or anything you want. Set the type as “Linux“, Version as “Red Hat 64 bit“. And press “Next”.

Create VM

Allocate “Memory ” to 512 Mb or 1024 MB . You can increase this value according to requirements. And Press”Next“.


Then select “Create a virtual Hardisk Now” and press “Create“.


Then choose “VDI” which is the first option, and press “Next“.

Hard Disk Type

Then choose “Dynamically allocated

Storage Type

Choose the amount of hard disk space you want to allocate for your CentOS system. Select atleast 8Gb-10GB . I have allocated 20 GB. And press “Create“.

Hard Disk Size

You would see the Virtual Box Home Screen. Now Press on “Start“.


Then press the small folder icon and choose the CentOS ISO file you have downloaded  earlier. And then press “Start“.

Select ISO

selected iso

Wait for a few seconds and you will see the CentOS boot menu. Now, select the first option “Install or upgrade an existing system“. And press “Enter” in your keyboard.

Boot menu

Now , it will take a few seconds to load.


[Note: To scroll through different options, you can either use the Arrow keys in your keyboard or the TAB key to move through different options . You may also use SPACE bar in your keyboard or ENTER key to make selections]

Now, you will probably get a message box saying “Disk Found” and if you want to verify the contents in the CD. Press “Skip” as you are installing from an ISO file. If you need, you can press “OK” and verify the contents but it might take a while.

Verify Or Not

You would see a message “Welcome to CentOS” and then press “OK“.

Welcome Screen

Select the language and press “OK“.

Language selection

Select the model of the keyboard or just leave it to the default value. then press “OK“.

keyboard model

If you get a “Warning Message” such as the one below, just chooseRe-initialize all“.

Warning Message

Then select your time zone and (Press TAB) and then  “OK“.


Now, you will need to enter a password. This will be the password for the root user (or Administrator password). Then select “OK“. {Remember you can use the arrow keys or TAB to move through different fields or options in the screen}.

set root password

Now, select “Use entire drive” and then press “OK“.

Erase Disk

Now, press “Write changes to disk“.

write changes

Now, it will begin installing CentOS. It might take a while for it to complete.

dependencies check

installing screen

After, it is done installing , you will see a message saying “Congratulations, your CentOS installation is complete“. Select “Reboot” and hit ENTER.


It will reboot now, and you will see the CentOS booting screen.


CentOS booting

Now, you will see the login prompt as shown in the picture below. Now, Type the login as “root” and password as the password you entered during the setup.

login screen

After successful login  you will see a prompt as shown below with  # symbol at the end.

Succesful login and root prompt

And voilà ! You have successfully installed CentOS in your Virtual Box.

This is a minimal mode CentOS and so many application packages are not installed. You will also have to configure the network to access the internet.

[UPDATE: To configure network in CentOS, I have made a detailed guide with screenshots, you can find it here.]

If you have any sort of queries on regarding this installation, just leave a comment and will get back at you. Don’t forget to follow my blog to get future updates! :D


  1. John Doe says:

    I have some troubles installing… When I get to the point where I need to choose CentOS iso file that I have downloaded, I select it and it comes up with an error..

    Failed to open the CD/DVD image D:\myname\Downloads\CentOS-6.3-x86_64-minimal.iso.

    Could not get the storage format of the medium ‘D:\myname\Downloads\CentOS-6.3-x86_64-minimal.iso’ (VERR_NOT_SUPPORTED).

    Result Code: VBOX_E_IPRT_ERROR (0x80BB0005)
    Component: Medium
    Interface: IMedium {29989373-b111-4654-8493-2e1176cba890}
    Callee: IVirtualBox {3b2f08eb-b810-4715-bee0-bb06b9880ad2}
    Callee RC: VBOX_E_OBJECT_NOT_FOUND (0x80BB0001)

    Can anyone help?
    Thanks in advance.

    • ΞXΤЯ3МΞ says:

      @John Doe , Hey there. There are couple of users who had this similar issue before, most of them was due to corrupted downloads of the CentOS ISO file.

      -> Try re-downloading the CentOS ISO image file and mounting it again. It should be fine.

      Even after this step if you face any sort of issues. Please post the error message here and I would be glad to help you out.

      Thank You

      • John Doe says:

        Hey, thanks for the help. I passed that step, but there’s a problem on the next one.
        When I press “Install or upgrade an existing system”, the process starts off but than stops and says:
        This kernel requires an x86-64 CPU, but only detected an i686 CPU.
        Unable to boot – please use a kernel appropriate for your CPU.

        Sorry for all the hustle, I’m a bit of an amateur. 🙂

  2. ΞXΤЯ3МΞ says:

    @John Doe, Dont worry. There are couple of things we need to check before installing an OS in virtual box such as :

    1. Check if your processor support Virtualization.

    I have written a post about how to find it out if you have an Intel processor.

    You can find it here at :

    2. Make sure that Virtualization is enabled in your BIOS settings.

    When you boot your computer, you will see the BIOS screen or the vendor screen, at that point of time, you need to press ESC (or some key such as F10 depending on what is shown in your BIOS). This will then take you to the BIOS settings. Now, BROWSE around and you would see a field such as to enable or disable “Virtualization Technology” or something like “Enable VT-x” or “Enable AMD-V” and change it to “Enabled”. Restart your computer.

    (If you have difficulty finding out this, please post your BIOS name and your processor model and I will check it out for you.)

    3. Find out the type of OS you have installed , whether it is 32-bit or 64-bit.

    Press the “Windows” key(located next to the left CTRL key) and the “Pause Break” (located mostly near the SCROLL LOCK key in your keyboard) together. Now, you will see a field named “System Type” .

    -> If the “System type” is “64-bit”, and you have downloaded the CentOS 64-bit version which I have mentioned in my blog post, then its fine.

    -> If it says 32-bit, then you need to download the 32bit of the CentOS file which can be downloaded from :

    Hope this helps out. Please , leave a comment if you need any sort of help. I will be glad to help you out!

    Thank You so much for visiting my blog!

    • John Doe says:

      It turns out my pc doesn’t support virtualization…

      Anyway, thanks for the help.

    • Nuri says:

      My Dell XPS 2720 doesn’t support virtualization and I have 64bit Windows 8.1 Pro installed. Can I only install 32 bit CentOS in VirtualBox (I can’t see the 64 bit options in Virtual box)?

      • Nuri says:

        For the benefit of anybody with a Dell XPS 27 all in one (mine is an XPS 2720) you have to turn OFF Virtualization in BIOS to actually turn it on (it’s the wrong way around) then install Virtual box again and you will see the 64 bit OS options in Virtual Box drop down.

  3. dannyphan says:

    Thanks very much. I followed your tutorial successfully. Can you make a another one showing how to configure network and any other basic settings.

    Thanks again.

  4. Yes, a post about how to configure the network would be most helpful. Thank you for taking the time to add screenshots.

  5. Sam says:

    I managed to install this minimal centos but it does not have cc or gcc compilers. I need to work on C and perl programs. Can you tell me how to make this work in this installation?
    Or is there any direct link to download the complete CentOS 6.3 which has all these components?
    Its kind of urgent. plz respond soon.

  6. Divyesh Rupawala says:

    thank you for this tutorial.
    nice one good job.

  7. Loved this easy to follow installation guide! The screen shots were especially helpful. Thank you for sharing this.

  8. Amin says:

    Thanks so much I installed the centOS successfully but have not been able to find a guide on how to configure the network so I can start downloading from YUM or access internet. I noticed you are posting a guide soon, please let me know if you have a basic guide that I can follow.

  9. Gunwant says:

    I have followed the steps you mentioned. Please post the next part for the configuration of net work. Because if I type command # yum install httpd. Its not working.

    I have also search it on google , but couldn’t help me out.

    I am using windows 7 as host OS. Please help me.

    • ΞXΤЯ3МΞ says:

      @Gunwant, One way for configuring the network, open your virtual box settings and go to the “Network” tab and choose the option “Attached to” to “Bridged Adapter”.

      Then boot your centos virtual machine, and type the following in your terminal:

      # vi /etc/sysconfig/network-scripts/ifcfg-eth0

      And then change the file to the following:


      And save the file and exit. After that you need to restart the network service and you can do that by typing the following in the terminal:

      # service network restart

      Now, you can check your command

      # yum install httpd

      Now, it should work. I will be posting a detailed article soon for my readers soon. Thank you for visiting my blog. Feel free to ask any questions in the comments section. Have fun!

    • ΞXΤЯ3МΞ says:

      @Gunwant, I have also created a detailed guide on configuring network (both dynamic and static method). You can find it here:


  10. eranjaya says:

    thak you very much bro…
    but i want to know how can i change the graphical interface?

    • ΞXΤЯ3МΞ says:

      @eranjaya, your welcome! We have installed the CentOS minimal version which does not have the graphical interface but we can add the graphical interface. To add the graphical interface, type the following in your terminal:

      yum groupinstall basic-desktop desktop-platform x11 fonts


      yum groupinstall “Desktop” “Desktop Platform” “X Window System” “Fonts”

      I hope this helps and thanks a ton for visiting my blog!


  11. White8 says:

    can you please reply me how to install CentOS 6.3 in text mode on two different storages.
    On first storage I need install boot & on second storage I need all others files.


    • ΞXΤЯ3МΞ says:

      @White8, You mean you need two partitions , one for the os itself and the another as a secondary storage? And you want to add a secondary device after installing Centos using a single partition?

  12. Sandra Claude says:

    Thanks. No real issues that I could not resolve in the minimal installation. The only issue I’m running into is the password I setup for root. I probably fat fingered it in the installation, because now the system is not recognizing the password.

    • ΞXΤЯ3МΞ says:

      @Sandra Claude, If you don’t remember the password, you can this following hack to reset the password.

      1. Restart your OS and tap on any any key during the boot countdown.

      2. Press e when you see the GRUB menu.

      2. Now from this menu , select kernel /vmlinuz-… line and press e . Now you will see the boot option which has a long line. At the end of that line put a space and type “single” (without the quotes) and hit Enter. Now press of ‘b’ key to boot this configuration.

      3. Now, you will boot into the single user mode. You can now change the password by typing the following in the terminal:


      Now enter your new password. You will be prompted to enter the password twice to confirm.

      4.Now, you have created a new password. All you have to do is restart the computer to the normal mode. You can do that by typing the following in the terminal:


      Hope this helps!


  13. Quanta says:

    Thanks for this pretty clear how-to. I’m working through creating a minimal system for virtualization — basically running a bunch of VM’s each hosting a site — and found your write very helpful.

  14. CentOS Fan says:

    With CentOS 6.4, if you allocate 1 GB of RAM when creating VM, you’ll see a pleasant surprise. A graphical installer appears, which makes installation much easier.

  15. Tausen says:

    Thanks for a great guide! I’m having some issues with the Virtualbox guest additions – whenever I install updates for CentOS, it seems that the guest additions services no longer start automatically, and I have to reinstall them to make it work. Any ideas how to fix this issue?

  16. Usman says:

    Great work EXTR3ME … 🙂

  17. Hey! I just wanted to ask if you ever have any issues with
    hackers? My last blog (wordpress) was hacked and I ended up losing many months of hard work due to no
    backup. Do you have any solutions to prevent hackers?

  18. MWcrew says:

    Thank’s for this tutorial. but i can’t login in my centos. i dont know the “localhost login username”, in this tutorial i can’t see the setup for login username. can you help me to fix this..

  19. linuxnewbie says:

    really helpful. thanks a lot for this!

  20. val10 says:

    I follow your instructions and its done perfectly. Only i use this link to download centOS 6.4

  21. Sasi says:

    At the 16th image u have mentioned that if a warning click re intialize , By pressing this does remaining data in the drive will be lost ???

    • ΞXΤЯ3МΞ says:

      @Sasi, In this tutorial, we are creating and installing the OS in a virtual hard disk, so it is fine to click on the reinitialize as it will be making changes only to the virtual hard disk that you have created.


      • Sasi says:

        @Extreme Thank you.I installed it successfully.How to do java prgms in the this?? From where can i download these packages??

  22. Fari says:

    hey… i wanna ask that by installing CentOS, the windows will get affected or not? By doing the above mentioned steps to install the centOS, data stored in windows will be lost or not?

  23. fauny says:

    The blog is precise and it helped me a lot.
    Thank you

  24. geracastro says:

    Nice Guide. Thanks!

  25. Ademola says:

    Hi. Please, i can’t see Red hat 64bit option. Kindly help

    • ΞXΤЯ3МΞ says:

      @Ademola, By default, the option for Type selected would be Microsoft , make sure you change the Type to “Linux” and then proceed with the selection of the Version. It should ideally have Red Hat (64-bit). Hope this helps.


  26. Very useful, many thanks!

  27. Vp says:

    Thank you. These steps really helped me to install CentOS for nagios.

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