Mbr To Gpt

Updated 801 Days AgoPublic

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convertir le disque en gpt avec diskgenius
virer la partition ntfs de 500 mb qui se trouve avant la partition système

Case 1. Create EFI partition in Windows 10 with CMD
▶ Note:

1. If your PC cannot boot normally and you want to recreate a new EFI partition, please boot your computer from Windows installation USB or disc, and press “Shift”+ ”F10” to open CMD.
2. If you wish to do this on an MBR disk, please convert to GPT at first.

Step 1. Press “Windows”+ “R” and type “CMD”, click “OK” to open CMD.

Step 2. Input the command lines below to shrink a partition to get unallocated space.

• diskpart
• list disk
• select disk x (x represents the sequence number of the disk where an EFI partition is required)
• list partition
• select partition n (n represent the sequence number of the partition to be shrunk)
• shrink desired=500 (shrink the partition by 500MB)

Create EFI partition CMD

Step 3. Now, create an EFI system partition by using the unallocated space with the command lines below.

• create partition efi​
• format fs=fat32 quick​
• assign letter=Y​
• exit​ (exit diskpart.exe)

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• bcdboot C:\windows /s Y:

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Then you can boot from boot drive alone. And install OS on that disk. Don’t forget to enable UEFI boot mode if you want to boot on a Legacy BIOS device.