Windows Not Booting After Converting From MBR to GPT

Basically, I used the Windows partition wizard to switch from MBR to GPT. And then I wanted to switch to UEFI because my legacy system was having trouble booting up. However, as a result, my computer is now stuck at a black screen and won't boot up.

Best Answered by

Roxanne· Answered on Jun 18, 2024

Windows may fail to boot after converting from MBR to GPT partitioning because of a mismatch between the partition style and the firmware boot mode. To solve this issue, you should change the firmware boot mode to UEFI after converting the disk to GPT. Here are the key steps:

Step 1. Entering the firmware setup (often by pressing a key like F2, F10, or Del during boot.

Step 2. Disabling Legacy/CSM boot options and enabling UEFI boot mode

Step 3. Saving changes and rebooting

If you want to avoid various problems after converting MBR to GPT, you can rely on EaseUS Partition Master Professional for disk/partition conversion tasks. This prominent software can simplify the MBR2GPT process and ensure no data loss risk. Follow the easy tutorial to complete the conversion in a few clicks:

Free Download 

Windows 11/10/8/7100% Secure

Step 1. Install EaseUS Partition Master on your PC after downloading it.

Step 2. Open Disk Converter, choose "Convert MBR to GPT," and press "Next" to proceed.

Step 3. Choose the MBR disk you want to convert to GPT as your destination, then click "Convert" to begin the process.

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