Convert disk From MBR to GPT to install windows

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nster

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I attempted to install windows from a USB, but it gave an error saying "Error: Windows Cannot Be Installed to This Disk. The Selected Disk Has an MBR Partition Table. On EFI Systems, Windows Can Only Be Installed to GPT."

I disabled all EFI boot sources and safe boot, but the error is still appearing.

I would like to know how to convert my drive from a MBR to a GPT without having to delete the partitions already on the drive, without suffering any data loss, and without purchasing software (like that from AOMEI) to do so.

If you know how to solve this problem, your help would really really be appreciated! thank you!
 

My Computer

System One

  • OS
    Windows 8 64 bit
    System Manufacturer/Model
    Apple
    CPU
    3rd Gen Intel core i7 Ivy Bridge
    Motherboard
    Apple Inc.
    Memory
    32GB
    Graphics Card(s)
    NVIDIA GeForce GTX 680MX

My Computer

System One

  • OS
    ME, XP,Vista,Win7,Win8,Win8.1
    Computer type
    PC/Desktop
    Other Info
    Notebooks x 3

    Desktops x 5

    Towers x 4
If you want you can use GPT fdisk Tutorial

You have to be careful though to type in the correct numbers (for where partitions start). It did work for me.
 

My Computer

System One

  • OS
    Windows 10 Pro Prieview x64
    Computer type
    Laptop
    System Manufacturer/Model
    MacBook Pro Core2Duo
    CPU
    T7600
    Memory
    3
    Graphics Card(s)
    ATI Radeon X1600
    Monitor(s) Displays
    Internal
    Screen Resolution
    1440 x 800
    Hard Drives
    40GB
    Keyboard
    Apple
    Mouse
    Apple
    Internet Speed
    Varies
    Browser
    Various
    Antivirus
    Defender
nster said:
I attempted to install windows from a USB, but it gave an error saying "Error: Windows Cannot Be Installed to This Disk. The Selected Disk Has an MBR Partition Table. On EFI Systems, Windows Can Only Be Installed to GPT."
Click to expand...

Quote from this post: UEFI Boot Mode (installing using the GPT partition style) and Legacy BIOS Boot Mode (installing using the MBR partition style). -> link

Tip   Tip
Error message when you boot from the Windows installation media in Legacy BIOS Boot Mode:

Windows cannot be installed to this disk. The selected disk is of the GPT partition style. (see screenshot below)

That is because Windows can only be installed to MBR disk in Legacy BIOS Boot Mode, but you plan to install Windows on a GPT disk.

- Boot from the Windows installation media in UEFI Boot Mode, so you can use GPT (GUID Partition Table).
- But if you want to use MBR (Master Boot Record) partition table, then delete all partitions on the disk.

Windows cannot be installed to this disk. The selected disk is of the GPT partition style.png

Error message when you boot from the Windows installation media in UEFI Boot Mode:

Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed to GPT disks. (see screenshot below)

That is because Windows can only be installed to GPT disk in UEFI Boot Mode, but you plan to install Windows on an MBR disk.

- Delete all partitions on the disk, so you can use GPT (GUID Partition Table).
- But if you want to use MBR (Master Boot Record) partition table, then boot from the Windows installation media in Legacy BIOS Boot Mode.

Windows cannot be installed on this disk. The selected disk has an MBR partition table.png
Click to expand...
 
Last edited:

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    System Manufacturer/Model
    Lenovo G580
    CPU
    Intel Core i5-3230M
    Memory
    8 GB
    Graphics Card(s)
    Intel HD Graphics 4000
    Browser
    Microsoft Edge
    Antivirus
    Windows Defender, standard user account
    Other Info
    UEFI firmware (BIOS) embedded Windows 8 product key.
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