7.3. Additional Ways to Prepare the Installation Media

Procedure 7.4. Preparing USB Installation Media using dd on Linux Systems

1. Run the following command to ensure you have the latest version of the Red Hat Enterprise Virtualization Hypervisor disk image:
   • For Red Hat Enterprise Linux 6:

     # yum update rhev-hypervisor6

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   • For Red Hat Enterprise Linux 7:

     # yum update rhev-hypervisor7

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2. Use the dd utility to write the disk image to a USB storage device.

   Example 7.10. Use of dd

   This example uses a USB storage device named /dev/sdc.

   # dd if=/usr/share/rhev-hypervisor/rhev-hypervisor.iso of=/dev/sdc
   243712+0 records in
   243712+0 records out
   124780544 bytes (125 MB) copied, 56.3009 s, 2.2 MB/s
   

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   Warning

   The dd utility will overwrite all data on the device specified by the of parameter. Ensure you have specified the correct device and that the device contains no valuable data before using the dd utility.

Procedure 7.5. Preparing USB Installation Media using dd on Windows Systems

1. Open http://www.redhat.com/services/custom/cygwin/ in a web browser and click 32-bit Cygwin to download the 32-bit version of Red Hat Cygwin, or 64-bit Cygwin to download the 64-bit version of Red Hat Cygwin.
2. Run the downloaded executable as a user with administrator privileges to open the Red Hat Cygwin installation program.
3. Follow the prompts to install Red Hat Cygwin. The Coreutils package in the Base package group provides the dd utility. This package is automatically selected for installation.
4. Copy the rhev-hypervisor.iso file downloaded from the Content Delivery Network to C:\rhev-hypervisor.iso.
5. Run the Red Hat Cygwin application from the desktop as a user with administrative privileges.

   Important

   On the Windows 7 and Windows Server 2008, you must right-click the Red Hat Cygwin icon and select the Run as Administrator option to ensure the application runs with the correct permissions.
6. In the terminal, run the following command to view the drives and partitions currently visible to the system:

   $ cat /proc/partitions

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   Example 7.11. View of Disk Partitions Attached to System

   Administrator@test /
   $ cat /proc/partitions
   major minor  #blocks  name
       8     0  15728640 sda
       8     1    102400 sda1
       8     2  15624192 sda2

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7. Attach the USB storage device to which the Red Hat Enterprise Virtualization Hypervisor disk image will be written to the system. Run the cat /proc/partitions command again and compare the output to that of the previous output. A new entry will appear that designates the USB storage device.

   Example 7.12. View of Disk Partitions Attached to System

   Administrator@test /
   $ cat /proc/partitions
   major minor  #blocks  name
       8     0  15728640 sda
       8     1    102400 sda1
       8     2  15624192 sda2
       8    16    524288 sdb
   

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8. Use the dd utility to write the rhev-hypervisor.iso file to the USB storage device. The following example uses a USB storage device named /dev/sdb. Replace sdb with the correct device name for the USB storage device to be used.

   Example 7.13. Use of dd Utility Under Red Hat Cygwin

   Administrator@test /
   $ dd if=/cygdrive/c/rhev-hypervisor.iso of=/dev/sdb& pid=$!
   

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   Warning

   The dd utility will overwrite all data on the device specified by the of parameter. Ensure you have specified the correct device and that the device contains no valuable data before using the dd utility.

   Note

   Writing disk images to USB storage devices with the version of the dd utility included with Red Hat Cygwin can take significantly longer than the equivalent on other platforms. You can run the following command to view the progress of the operation:

   $ kill -USR1 $pid

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Procedure 7.6. Preparing Optical Hypervisor Installation Media

1. Install the wodim package and dependencies:

   # yum install wodim
   

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2. Insert a blank CD-ROM or DVD into your CD or DVD writer.
3. Write the disk image to the disc:

   wodim dev=[device] [image]

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   Note

   To find out the name of your writer device, run the following command:

   # less /proc/sys/dev/cdrom/info

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   Example 7.14. Use of the wodim Utility

   This example uses the first CD-RW (/dev/sr0) device available and an example unified installer disk image location.

   # wodim dev=/dev/sr0 /usr/share/rhev-hypervisor/rhev-hypervisor.iso
   

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