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How to  create Bootable Media

We are now going to install CentOS 7 from a bootable USB drive. To create a bootable USB drive of CentOS 7 we need

  • CentOS 7 iso image file
  • A USB drive with minimum 4GB space

Follow the procedure given below to create CentOS 7 bootable USB drive in very easy way.

Assuming your USB drive path is like /dev/sdb and absolute path of CentOS 7 iso is /CentOS7.iso.

  1. Plug in the USB drive
  2. Unmount the USB drive partition if it is automatically mounted
  3. Use “fdisk” to delete any partition created in the USB drive and create a single VFAT partition
  4. Format the newly created VFAT partition with “mkfs.vfat” command
  5. Use “dd” command to write the CentOS 7 iso image file to the USB drive.
    dd if=<Path to CentOS 7 iso> of=<USB drive path>
dd if=/CentOS7.iso of=/dev/sdb

INSTALLATION PROCEDURE FOR CENTOS 7

Start the machine and boot from a USB drive. You will see the menu as given in below image. Here we have to select “Install CentOS 7” menu entry.

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Once CentOS system installer Anaconda starts, we will be asked to set the language preferences to use during installation.

Select the language as you want and click on “Continue” button.

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Select “Server with GUI” from “Software selection” and click on “Done” button.

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In “Installation Destination” select the disk which you want to use for installation of CentOS. Also, select “I will configure partitioning” on the same menu and click on “Done” button.

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Create three partitions as shown in the image.

/boot -> 500MB -> xfs
/     -> 12GB  -> xfs
swap  -> 256MB -> swap

After creating partitions click on “Done” button.

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Click on “Begin Installation” button once all the components have been configured correctly.Linux Installation

 

The installation process will start now and you will need to set a password for “root” user and create a new regular user.

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