How to convert MBR hard drive partitions to GPT – Guide

For added security, Windows 11 will abandon the older MBR partition scheme and use GPT instead. This may require users to convert their older hard drives. Here it is how to Knife. Current Windows 10 users who plan to upgrade their operating systems to Windows 11 when it ships in October 2021 must first meet several strict, non-negotiable prerequisites. For example, in its attempt to make Windows PCs more secure, Microsoft is requiring that personal computers running Windows 11 also use the Unified Extensible Firmware Interface firmware installed on motherboards. To access enhanced security features UEFI, Windows 11 will abandon the old Master Boot Record (MBR) partition scheme and use the modern GUID Partition Table (GPT) scheme instead. If your Windows 10 computer is still using MBR, it will have to be converted to GPT before you are allowed to upgrade it to Windows 11. How to convert MBR hard disk partitions to GPT To determine if you have UEFI on your PC, you will have to access your specific motherboard’s system software. Unfortunately, there is no standard motherboard system software; each manufacturer has its own. So you’ll have to find out how to access your system on your own. Generally, the technique involves pressing a specific key while the system is booting. To determine if a hard drive is formatted using MBR or UEFI, right-click on the Start menu button and select Disk Management from the context list. On the Disk Management screen, right-click on a hard disk request, select Properties, and select the Volumes tab. The formatting type will be revealed. Converting an MBR partition to a UEFI partition is performed with the help of a simple utility in Windows 10 called MBR2GPT.exe, which is accessed from the administrative command line. The important thing to note about this utility is that it will convert without losing or overwriting any of the existing data. The MBR2GPT.exe utility requires Windows 10 version 1703 or higher, so it may be helpful to run an update before running the utility. When you are ready to convert, right click on the Start menu. button on Windows 10 and select the administrative command line from the context menu. Your choices are Windows PowerShell (Admin) or Command Prompt (Admin), depending on how you chose your installation. As a precaution, you should first validate that an MBR to GPT conversion is feasible by typing this command at the prompt, My hard drive is already GPT, so validation failed, but you get the point. If the utility returns “MBR2GPT: Validation completed successfully”, you know you are ready for the main command, which is: mbr2gpt.exe / convert / allowfullos Assuming the conversion completed successfully, you will have to restart your computer, but when you do, you must access your motherboard’s system software to change the boot partition configuration from MBR to UEFI before Windows 10 starts the boot process. Assuming you’ve met all other Microsoft prerequisites for Windows 11, your newly converted Windows 10 GPT version should now be ready for the October 2021 update to the next generation.

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