Follow the steps outlined in this article to convert a GPT partition to MBR to allow installation of Microsoft Windows 7.
If you try to install Windows 7 on a system that had shipped from the factory with Microsoft Windows 8, 8.1 or 10 and receive an error that Windows 7 could not be installed to a GPT (GUID Partition Table) partition, follow the steps below to convert the partition to GPT.
GUID Partition Table (GPT) is a new style of partitioning which is part of the Unified Extensible Firmware Interface (UEFI) Specification. This is used for Windows 8, 8.1, and 10 factory installations for greater partition flexibility and more advanced functions of Windows. With a Windows 7 installation, the GPT partition has to be removed and UEFI BIOS needs to be configured in a Legacy boot configuration.
Once the UEFI BIOS has been set to Legacy mode, then boot to the Windows 7 DVD and press SHIFT+F10 at the point to create or delete partitions to exit to a Command Prompt. (Alternately, at the Windows 7 Install Now Screen, Click Repair Your Computer. The System Recovery Options window is now loaded. Click Command Prompt.)
Then type the following commands:
Article ID: SLN208516
Last Date Modified: 09/03/2019 02:17 PM
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