How to Install Windows 10 on GPT Partition Without Errors

Installing Windows 10 on a GPT (GUID Partition Table) disk ensures better compatibility with modern UEFI-based systems, faster boot times, and support for drives larger than 2TB. However, if not set up properly, users often encounter errors like “Windows cannot be installed on this disk. The selected disk is of the GPT partition style.”

This guide walks you through each step to successfully install Windows 10 on a GPT partition, covering preparation, BIOS configuration, and post-installation checks.

What You Need to Install Windows 10 on a GPT Drive

Before diving into the installation process, make sure you have the following ready:

• A USB flash drive (8GB or larger)
• Windows 10 ISO file
• A valid Windows 10 product key (optional during install but required for activation)
• A UEFI-compatible motherboard

You’ll also need to disable Secure Boot temporarily if your motherboard restricts booting from unsigned USBs. This setting is usually found under the Security or Boot tab in BIOS.

Step 1: Check if Your PC Supports UEFI

Windows 10 requires UEFI mode to install on a GPT partition. Here’s how to verify:

1. Restart your computer and press the BIOS access key (usually F2, F10, Del, or Esc).
2. In BIOS, look for boot options. If UEFI is listed as a boot mode or boot option, your system is compatible.
3. If only Legacy BIOS is available, you won’t be able to install Windows 10 on a GPT disk.

Tip: If UEFI is available but disabled, enable it before proceeding. You may also see options like “UEFI/Legacy Boot” or “Boot Mode” — be sure to choose UEFI.

Step 2: Prepare the GPT Disk

The target disk must be initialized or converted to GPT format.

For a New Disk:

1. Install the disk into your system.
2. Open Disk Management (Windows + X → Disk Management).
3. Right-click the new disk > Initialize Disk > Select GPT as the partition style.

For an Existing MBR Disk:

1. Back up important data from the drive.
2. Use a tool like Diskpart or third-party partition software to convert it from MBR to GPT.
3. Format the partition to ensure clean installation.

Caution: Converting an MBR disk to GPT will erase all data if not done with non-destructive tools.

Step 3: Create Windows 10 Installation USB

To install Windows 10, you’ll need a bootable USB drive:

1. Download the Windows 10 ISO from Microsoft’s official site.
2. Use the Media Creation Tool or software like Rufus to create a bootable USB.
3. Ensure Partition scheme = GPT and Target system = UEFI when using Rufus.

Step 4: Configure BIOS for UEFI Installation

1. Insert the USB drive and restart the PC.
2. Enter BIOS and locate boot settings:
   • Set Launch CSM to Enabled (if available).
   • Set Boot Mode or Boot Device Control to UEFI Only.
   • Set USB UEFI OS at the top of the Boot Priority List.
3. Save and exit BIOS.

Step 5: Install Windows 10 on the GPT Disk

Once your PC boots from the USB:

1. Select language and region > Click Next.
2. Click Install Now.
3. When prompted for a product key, choose “I don’t have a key” if you wish to activate later.
4. Choose Custom: Install Windows only (advanced).
5. Select the GPT partition you prepared earlier and click Next.
6. The installation will begin and may restart your PC several times.

This process usually takes 20–30 minutes depending on system speed.

Step 6: Set Boot Priority to the GPT Disk

After installation:

1. Re-enter BIOS.
2. Ensure the GPT disk with Windows 10 is set as the first boot device under UEFI mode.
3. Save changes and exit.

Some systems require reordering under the Boot tab → UEFI Boot Order to prioritize the correct drive.

Step 7: Confirm Windows is Installed on GPT

To verify the partition style:

1. Boot into Windows.
2. Press Windows + X > Choose Disk Management.
3. Right-click the disk > Properties > Volumes tab.
4. Check Partition style—it should say GUID Partition Table (GPT).

Also, if you see an EFI System Partition, it confirms UEFI/GPT installation.

Step 8: Activate Windows 10

To activate your system:

1. Go to Settings > Update & Security > Activation.
2. Click Enter a product key and input your license.

If you used a digital license or previously activated hardware, activation may occur automatically.

Extra Tips: Protecting Data on GPT Partition

Installing Windows 10 on a GPT partition boosts performance, but protecting your data is just as crucial. Follow these key tips to keep it safe:

• Create regular backups: Use built-in tools or third-party backup software to protect your data.
• Avoid accidental formatting: Double-check before deleting or modifying partitions.
• Use antivirus software: Protect your system from malware or ransomware that could damage partitions.

FAQs: Install Windows 10 on GPT Partition

1. Can I install Windows 10 on GPT without UEFI?

No. GPT partitioning requires UEFI firmware. If your system only supports BIOS (Legacy), use MBR instead.

2. Is GPT better than MBR?

Yes. GPT supports larger drives (over 2TB), more partitions, and is more reliable due to CRC protection and redundancy.

3. How many partitions does Windows create on GPT?

On a new GPT disk, Windows typically creates:

• EFI System Partition
• Microsoft Reserved Partition (MSR)
• Primary Partition (System)

On an existing GPT disk, only the target partition is used unless formatted.

See also: How to Convert MBR to GPT Without Losing Data [Quick Guide]

Installing Windows 10 on a GPT partition might seem complicated at first, but with the right preparation and proper BIOS settings, it becomes a smooth process. Ensure your system supports UEFI, prepare your drive correctly, and follow each step with care. Once installed, you’ll enjoy better performance, boot security, and support for modern hardware.

Don’t forget to enable Secure Boot again if you disabled it during setup. Also, regularly check for firmware updates to maintain UEFI stability.