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Can you convert an MBR Windows installation to GPT without reinstalling Windows? Yesโ€”Microsoft provides a tool called MBR2GPT for supported installations, but there are important steps you should follow first.


Want to move from MBR to GPT while keeping your Windows installation?

Windows provides the MBR2GPT tool for supported Windows installations.

The general process is:

Back up your important data.
Verify that your computer's firmware supports UEFI.
Run MBR2GPT validation to check whether the disk meets the conversion requirements.
If validation succeeds, perform the conversion.
After conversion, configure the firmware to boot using UEFI instead of Legacy BIOS or Compatibility mode.

The exact process can vary depending on your Windows version, disk configuration, and computer firmware.

โš ๏ธ Important: Always understand the requirements and have a reliable backup before modifying disk partition structures or boot configuration.


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Transcript
00:00What if Windows is currently installed on an MBR disk and you want to move to GPT?
00:04Windows provides a tool called MBR2GPT for supported Windows installations.
00:10Before performing a conversion, you should create a complete backup of important data.
00:15You should also verify that the system firmware supports UEFI.
00:19The first step is validation.
00:21The command can be used to check whether the disk meets the requirements for conversion.
00:24If validation succeeds, MBR2GPT can perform the conversion.
00:30After conversion, the firmware boot configuration normally needs to be changed from legacy or compatibility mode to UEFI.
00:37The exact procedure depends on the computer and its firmware settings.

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