I tried the fix referenced by Glenn above, but selecting Windows 10 after that fix does absolutely nothing. Hoping someone knows how to be able to boot into Windows after choosing it from the boot list? Never mind. I got it working. HI, thanks for the article. I completed a dual install of centos 6. Follow the above and now always boots to windows not option to boot to centos. Samuel, sure. I followed all the steps to the latter. The grub bootloader should display all the booting options.
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Before proceeding, you need to take note of the following: Dual-booting any Linux distribution not just CentOS 7 will not slow down your Windows system. The two operating systems will be independent of each other and will not impact each other. In a dual boot setup, you can only use one operating system at a time. During the booting process, you will be presented with a list of operating systems to choose from by the boot loader.
This is crucial so that in case of any mishaps or accidental formatting of the hard drive, you will still have your data intact. Click the Forward button to proceed to the Virtual Machine Name screen. In the text box provided, enter an appropriate name for the new virtual machine. For the purposes of this tutorial we will use the name WindowsVM. Click Forward to proceed. The next screen displayed by the new virtual machine will provide the option to choose the method of virtualization. Since we plan to install an unmodified guest in the form of Windows we will need to select the Full Virtualization method.
If this option is disabled the most likely cause is that either the system CPU does not include the required virtualization features, or that they are currently disabled in the BIOS.
Assuming the option is not disabled, select Full Virtualization and ensure that Xen is selected from the Hypervisor menu:. Select the appropriate option and then choose the operating system type and variant. For the purposes of this tutorial we will be installing Windows 7. At the time of writing, however, Windows 7 is not listed as an option in the wizard.
We can, however, safely select Windows Vista instead:. If you have a disk partition available for the guest operating system, enter the device path into the Block device partition text field. Otherwise, select File disk image , enter the path of the file to be created or accept the default provided and select a file size keeping in mind the space requirements for your chosen guest OS.
Having defined these settings, click the Forward key once more to proceed. On the Connect to network host select Shared physical device and click Forward. This can be verified using the following commands:. If your system does not include this support you can still use Xen in para-virtualization mode. You will not, however, be able to run Microsoft Windows as a guest operating system.
Xen requires a specially modified Linux kernel and a number of tools in order to operate. By default, CentOS does not install this Kernel or these tools unless you specifically selected the Virtualization group of packages during installation process.
The next step, therefore, is to prepare the operating system for Xen. Begin by installing the virtualization tools and kernel as follows:. This command will install all the required packages approximately 16 packages in total , and configure the boot loader to provide a Xen virtualization option when the system is next booted. Once the virtualization packages have been installed close down any running applications and reboot the system.
When the boot screen appears hit any key to enter to boot menu and select the CentOS Xen boot option. If a Xen boot option is not provided, boot using the standard Linux kernel and execute the following commands before rebooting once again:.
When the boot has completed, log in as usual and open a Terminal window. In that window run the following command to verify that kernel with Xen support has loaded:. At this point the only domain that should be listed is domain-0 representing the host environment. When guest operating systems are running, these too will be listed. Guest systems can easily be configured using either the virt-install command-line tool, or the virt-manager GUI tool.
For the purposes of this chapter we will use the virt-manager tool. Once loaded, the virtual manager will display the following screen:. To create a new guest system, select the top entry in the list the host named centos5 in the above example and click on the New button to display the first configuration screen. Click the Forward button to proceed to the Naming screen and enter a name for the virtual machine. This can be any name you choose. On the next page, you can choose to configure a Full or Para-virtualized method.
The Full virtualization option will only be selectable if your hardware supports it:. The next screen requires information about the location of the operating system installation files. Currently para-virtualized guest operating systems can only be installed over a network or the internet. The easiest way is to provide the http address of the operating system installation files. To install the i Fedora 13 Linux distribution over the internet, for example, you would enter the URL to the distribution image files provided on-line by Red Hat:.
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