wikiInstalling Windows in UEFI-mode
In this article, you will find information on how to install a 64 Bit Windows (Windows Vista SP1, Windows 7, Windows 8, Windows Server 2008, Windows Server 2008 R2 and Windows Server 2012) in UEFI mode.
Change Launch Storage opROM policy to UEFI
Before the installation, the set-up Launch Storage opROM policy must be changed to UEFI first.
Instructions can be found in the article Restoring UEFI boot entry via motherboard replacement or BIOS update# Set-up Launch Storage opROM policy first.
UEFI boot
During the installation, please note that the storage device must be started in UEFI mode.
In this screenshot, you can see the boot options: USB stick, DVD drive, UEFI: USB stick, UEFI: DVD drive and UEFI shell. For example, to boot in UEFI mode using the DVD drive, the command UEFI:HL-DT-... must be selected.
During the Windows installation process, there is no difference to the "normal" installation of Windows except that under UEFI, the boot partitions can be larger than 2 TB.
UEFI shell
If booting the installation media does not work, the setup can also be initiated via UEFI shell.
In this screenshot, you can see the required commands in order to trigger the setup manually:
Now, the Windows setup should launch.
Check the UEFI installation
After the successful installation of Windows, it must be verified that Windows is installed in UEFI mode.
You can do this either by checking in the BIOS or using the command prompt tool, Diskpart.
Check in the BIOS
If the UEFI installation was successful, you will find the entry Windows Boot Manager in the Boot Options Priorities of your BIOS.
Check with Diskpart
If you want to check the UEFI installation with DiskPart, you must run the Windows command prompt as an administrator and enter the following commands:
If the command list disk shows that the system drive is a GTP drive, the UEFI installation of Windows has been successful.
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Author: Armin Oberneder Armin Oberneder has been working for Thomas-Krenn.AG for over 7 years now. He is currently employed in the consulting team and thus takes care of all customer-specific inquiries concerning servers, storage, virtualization and networks. In the past years Armin has specialized in Windows Server, Software-Defined-Technologies and Network Technology. Due to these specializations, he also ensures that our customers are helped as quickly as possible in the event of problems by means of a ticket system, by telephone or in writing via e-mail.
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