Procedure 8.2. Preparing USB Installation Media Using livecd-iso-to-disk

1. Install the rhev-hypervisor package to download the latest version of the Hypervisor.
2. Use the livecd-iso-to-disk utility to copy the disk image, located in the /usr/share/rhev-hypervisor/ directory, to the USB storage device. The --format parameter formats the USB device. The --reset-mbr parameter initializes the Master Boot Record (MBR).
   ⁠

   Example 8.1. Use of livecd-iso-to-disk

   This example demonstrates the use of livecd-iso-to-disk to write to a USB storage device named /dev/sdc and make the USB storage device bootable.

   # livecd-iso-to-disk --format --reset-mbr /usr/share/rhev-hypervisor/rhev-hypervisor.iso /dev/sdc
   Verifying image...
   /usr/share/rhev-hypervisor/rhev-hypervisor.iso:   eccc12a0530b9f22e5ba62b848922309
   Fragment sums: 8688f5473e9c176a73f7a37499358557e6c397c9ce2dafb5eca5498fb586
   Fragment count: 20
   Press [Esc] to abort check.
   Checking: 100.0%
   
   The media check is complete, the result is: PASS.
   
   It is OK to use this media.
   
   WARNING: THIS WILL DESTROY ANY DATA ON /dev/sdc!!!
   Press Enter to continue or ctrl-c to abort
   
   /dev/sdc: 2 bytes were erased at offset 0x000001fe (dos): 55 aa
   Waiting for devices to settle...
   mke2fs 1.42.7 (21-Jan-2013)
   Filesystem label=LIVE
   OS type: Linux
   Block size=4096 (log=2)
   Fragment size=4096 (log=2)
   Stride=0 blocks, Stripe width=0 blocks
   488640 inodes, 1953280 blocks
   97664 blocks (5.00%) reserved for the super user
   First data block=0
   Maximum filesystem blocks=2000683008
   60 block groups
   32768 blocks per group, 32768 fragments per group
   8144 inodes per group
   Superblock backups stored on blocks: 
           32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
   
   Allocating group tables: done                            
   Writing inode tables: done                            
   Creating journal (32768 blocks): done
   Writing superblocks and filesystem accounting information: done 
   
   Copying live image to target device.
   squashfs.img
      163360768 100%  184.33MB/s    0:00:00 (xfer#1, to-check=0/1)
   
   sent 163380785 bytes  received 31 bytes  108920544.00 bytes/sec
   total size is 163360768  speedup is 1.00
   osmin.img
           4096 100%    0.00kB/s    0:00:00 (xfer#1, to-check=0/1)
   
   sent 4169 bytes  received 31 bytes  8400.00 bytes/sec
   total size is 4096  speedup is 0.98
   Updating boot config file
   Installing boot loader
   /media/tgttmp.q6aZdS/syslinux is device /dev/sdc
   Target device is now set up with a Live image!
   

Procedure 8.3. Preparing USB Installation Media using dd on Linux Systems

1. Install the rhev-hypervisor package.

   # yum install rhev-hypervisor

2. Use the dd command to copy the image file to the disk.
   ⁠

   Example 8.2. 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
   

   Warning

   The dd command will overwrite all data on the device specified for the of parameter. Any existing data on the device will be destroyed. Ensure that the correct device is specified and that it contains no valuable data before invocation of the dd command.

Procedure 8.4. Preparing USB Installation Media using dd on Windows Systems

1. Access http://www.redhat.com/services/custom/cygwin/ and click the Red Hat Cygwin official installation utility link. The rhsetup.exe executable will download.
2. As the Administrator user run the downloaded rhsetup.exe executable. The Red Hat Cygwin installer will display.
3. Follow the prompts to complete a standard installation of Red Hat Cygwin. The Coreutils package within the Base package group provides the dd utility. This is automatically selected for installation.
4. Copy the rhev-hypervisor.iso file downloaded from Red Hat Network to C:\rhev-hypervisor.iso.
5. As the Administrator user run Red Hat Cygwin from the desktop. A terminal window will appear.

   Important

   On the Windows 7 and Windows Server 2008 platforms it is necessary to 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 cat /proc/partitions to see the drives and partitions currently visible to the system.
   ⁠

   Example 8.3. 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

7. Plug the USB storage device which is to be used as the media for the Hypervisor installation into the system. Re-run the cat /proc/partitions command and compare the output to that of the previous run. A new entry will appear which designates the USB storage device.
   ⁠

   Example 8.4. 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
   

8. Use the dd command to copy the rhev-hypervisor.iso file to the disk. The 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 8.5. Use of dd Command Under Red Hat Cygwin

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

   The provided command starts the transfer in the background and saves the process identifier so that it can be used to monitor the progress of the transfer. Refer to the next step for the command used to check the progress of the transfer.

   Warning

   The dd command will overwrite all data on the device specified for the of parameter. Any existing data on the device will be destroyed. Ensure that the correct device is specified and that it contains no valuable data before invocation of the dd command.
9. Transfer of the ISO file to the USB storage device with the version of dd included with Red Hat Cygwin can take significantly longer than the equivalent on other platforms.
   To check the progress of the transfer in the same terminal window that the process was started in send it the USR1 signal. This can be achieved by issuing the kill command in the terminal window as follows:

   kill -USR1 $pid

10. When the transfer operation completes the final record counts will be displayed.
    ⁠

    Example 8.6. Result of dd Initiated Copy

    210944+0 records in
    210944+0 records out
    108003328 bytes (108 MB) copied, 2035.82 s, 53.1 kB/s
    
    [1]+    Done            dd if=/cygdrive/c/rhev-hypervisor.iso of=/dev/sdb