Windows problem: Installing using the MBR or GPT partition style

Situatie

When installing Windows on UEFI-based PCs using Windows Setup, your hard drive partition style must be set up to support either UEFI mode or legacy BIOS-compatibility mode.

Simptome

Receive the error message: “Windows cannot be installed to this disk. The selected disk is not of the GPT partition style”, it’s because your PC is booted in UEFI mode, but your hard drive is not configured for UEFI mode.

Solutie

Pasi de urmat

Reformatting the drive using a different partition style

To wipe and convert the drive by using Windows Setup

Turn off the PC, and put in the Windows installation DVD or USB key.
Boot the PC to the DVD or USB key in UEFI mode.
When choosing an installation type, select Custom.
On the Where do you want to install Windows? screen, select each of the partitions on the drive, and select Delete. The drive will show a single area of unallocated space.
Select the unallocated space and click Next. Windows detects that the PC was booted into UEFI mode, and reformats the drive using the GPT drive format, and begins the installation.

To manually wipe a drive and convert it to GPT:

Turn off the PC, and put in the Windows installation DVD or USB key.
Boot the PC to the DVD or USB key in UEFI mode. For more info
From inside Windows Setup, press Shift+F10 to open a command prompt window.
Open the diskpart tool:
```
diskpart
```
Identify the drive to reformat:
```
list disk
```

Select the drive, and reformat it:

select disk <disk number>
clean
convert gpt
exit

Close the command prompt window.
Continue the Windows Setup installation.

When choosing an installation type, select Custom. The drive will appear as a single area of unallocated space.

Select the unallocated space and click Next. Windows begins the installation.

Tip solutie

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