Windows 10: can i convert the disk to mbr and install Windows

Discus and support can i convert the disk to mbr and install Windows in Windows 10 Installation and Upgrade to solve the problem; Sorry if this is hijacking a thread but i have a question about this as well. I know i need to disable secure boot in order to change the boot... Discussion in 'Windows 10 Installation and Upgrade' started by AthanasianCreed, Aug 31, 2015.

  1. can i convert the disk to mbr and install Windows


    Sorry if this is hijacking a thread but i have a question about this as well. I know i need to disable secure boot in order to change the boot sequence. I ran into an issue trying to install Windows 10 on a GPT partition - it said it couldn't do it. So...after much searching, i learned (??) i need to use diskpart to clean the partitions to create one large unallotted space which would then allow me to install Windows. My question is, can i convert the disk to mbr and install Windows to it that way and run it in that mode. If i can do that, what would be the command to do that? > convert mbr after the clean command?? What about enabling secure boot?? Can i do that if i have installed Windows under MBR rather than GPT???

    Sorry if this has been answered elsewhere but i'm hesitant to clean install Windows 10 without clear instructions. Could some kind soul outline the sequence of commands to do the above. Hopefully, i've been clear enough on what i'm attempting to do. If not, i'll do my best to clarify.

    TIA!

    :)
     
    AthanasianCreed, Aug 31, 2015
    #1
  2. qinada Win User

    Windows Installation

    On EFI systems, Windows can only be installed to GPT disks. If you use MBR disk, you will receive this error message: Windows cannot be installed to this disk. The selected disk has an MBR partition table. You can convert MBR to GPT and try it again.
     
    qinada, Aug 31, 2015
    #2
  3. Jon-Stark Win User
    3TB Drive format windows 10 not working

    This is because your hard disk is MBR disk, you can check it in Disk Management.
    which only supports 2 TB drive. so the only way to get your space backup is to convert your disk back to GPT disk. Disk management can only convert a disk to MBR when it is empty. Therefore, you need a third party software to

    convert MBR to GPT on Windows 10
    without affecting the OS, such as AOMEI Partition Assistant.after installing this software, the Convert mBR/GPT wizard will guide you through the process. http://www.disk-partition.com/help/convert-gpt-mbr-disk.html
     
    Jon-Stark, Aug 31, 2015
    #3
  4. AddRAM Win User

    can i convert the disk to mbr and install Windows

    Yes, you can install to MBR, that`s all I use, you may have to enable Legacy bios or Legacy and UEFI if the bios has that option, my Z87 does.

    Disable secure boot before any install.

    You can google the commands or find them easily in the tut section here or at Seven Forums, but convert MBR sounds right, I don`t remember off the top of my head, had it written down somewhere.

    Convert GPT Disk to MBR Disk - Windows 7 Help Forums

    It`s very simple to do.
     
    AddRAM, Aug 31, 2015
    #4
  5. Thank you for the replies - you both have put my mind at ease if and when i deside to clean install Windows 10 on my laptop.
     
    AthanasianCreed, Sep 1, 2015
    #5
  6. topgundcp Win User
    It 's better to let Windows do all that work for you ie. create the needed partitions whether you want to install using GPT or MBR. Here's the steps.
    • Make sure to disconnect all HD's/SSD's except the one you plan to install Windows.
    • In BIOS: disable Secure Boot. Set to UEFI if you want to install Windows in UEFI Mode otherwise set it to the legacy BIOS.
    • Boot the installation USB/DVD. Select the boot mode as shown in screen shot. It's important that you select the correct one so Windows will initialize the disk appropriately (GPT/MBR)

      can i convert the disk to mbr and install Windows [​IMG]
    • On the first screen, press and hold SHIFT key + F10. Command Windows pops up
    • diskpart
    • select disk 0
    • clean
    • exit
    • exit
    • Continue with the installation, click on Custom Installation and select the unallocated partition (disk 0). Do not format, click next and let Windows creates the needed partitions
     
    topgundcp, Sep 1, 2015
    #6
  7. Thank you 'topgundcp' for the detailed instructions, much appreciated!!

    Regarding the above, if i want to set up as mbr, can i not format the drive to prevent the install of the 450 mb reserved partition?? Also, if i set up as mbr 1) do i need to add command > convert mbr to the above diskpart commands and 2) do i need to reenable secure boot in the BIOS? If i do, will i have a problem booting to Windows? Is it best just to leave as Legacy in BIOS?

    Thanks for the help
     
    AthanasianCreed, Sep 1, 2015
    #7
  8. GregH Win User

    can i convert the disk to mbr and install Windows

    I might be wrong but I think Windows will insist on the reserved partition. It uses it for house keeping.
     
    GregH, Sep 2, 2015
    #8
  9. genet Win User
    Here is info about UEFI Boot Mode (installing using the GPT partition style) and Legacy BIOS Boot Mode (installing using the MBR partition style). -> link
     
    genet, Sep 2, 2015
    #9
  10. Thank you 'genet' for the detailed instructions - very much appreciated!
     
    AthanasianCreed, Sep 3, 2015
    #10
  11. GregH Win User
    I'm still not 100% clear on this one: can I install Windows 10 in UEFI boot mode if I am installing from a Microsoft Windows 10 Pro DVD?

    If I pop the DVD into the drive and boot my PC to the boot selection page (F6 on my Asus Motherboard), I do not get an option for my DVD drive to run in UEFI mode. Just normal mode. I only get such an option if I have a USB ISO plugged in.
     
    GregH, Apr 4, 2018
    #11
Thema:

can i convert the disk to mbr and install Windows

Loading...
  1. can i convert the disk to mbr and install Windows - Similar Threads - convert disk mbr

  2. How to convert an MBR disk into a GPT disk

    in Windows 10 Installation and Upgrade
    How to convert an MBR disk into a GPT disk: why does windows 10 32 bit(x86) clean install as mbr when i pre-format the hard drive as gpt? is there a solution or is that the default and only option for installation? i've contacted asus who makes my motherboard to check for uefi details and everything i can think of...
  3. convert MBR to GPT disk

    in Windows 10 Installation and Upgrade
    convert MBR to GPT disk: DISKPART> list disk Disk ### Status Size Free Dyn Gpt -------- ------------- ------- ------- --- --- Disk 0 Online 465 GB 0 B Disk 1 Online 7633 MB 0 B DISKPART> list disk Disk ### Status Size...
  4. Convert 1.5TB disk from MBR to GPT

    in Windows 10 Drivers and Hardware
    Convert 1.5TB disk from MBR to GPT: I want to convert a 1.5TB MBR disk to a GPT disk. My other two disks are GPT so I'd like them all to be. No special reason, just because. When I tried mbr2gpt /validate /disk:2 I get ERROR: MBR2GPT can only be used from the Windows Preinstallation Environment. Use...
  5. Converting W10 System Disk from MBR to GPt

    in Windows 10 Drivers and Hardware
    Converting W10 System Disk from MBR to GPt: For some reason my W10 System Disk (SSD) is set up as an MBR Disk. My separate Data disk (HDD) is GPT. I know how to convert the System Disk to GPT using Minitools Partition Wizard. If I do that to the SSD will I loose the W10 installation? And is there any advantage to doing...
  6. Converting Windows 10 MBR Disk to GPT

    in Windows 10 Drivers and Hardware
    Converting Windows 10 MBR Disk to GPT: I have two internal disks and one external on my desktop. One of the internals is a GPT 1Tb disk for data and archive storage. The other is an MBR Windows 10 system disk and the external one is a 1TB USB. The system disk contains a System Reserved partition and the Windows 10...
  7. How to convert Windows 10 GPT disk to MBR with re-install?

    in Windows 10 Installation and Upgrade
    How to convert Windows 10 GPT disk to MBR with re-install?: Hello friends, My current config: Laptop = HP Pavilion sleekbook 14 BIOS = UEFI HDD = 500GB with GPT style OS = Windows 10 I want to rebuild it with MBR partition style (for experimental reasons) and took complete backup in external drive so I do NOT need to...
  8. utility to convert MBR disk with Windows partitions to GPT?

    in Windows 10 Installation and Upgrade
    utility to convert MBR disk with Windows partitions to GPT?: Does this utility exist? I've tried Minitool's free version, which claims to support MBR to GPT conversion, but I got a warning that the disk would not be bootable. I downloaded a trial of the paid Easeus partition manager and when I tried that conversion, I got an...
  9. Convert GPT Disk to MBR Disk in Windows 10

    in Windows 10 Tutorials
    Convert GPT Disk to MBR Disk in Windows 10: It's funny that the mbr2gpt utility in version 1703 can convert an OS drive from mbr to gpt without data loss but cannot do it for a simple data partition - lol. I tried it but it failed as I expected 2017-05-31 08:52:07, Error ValidateLayout: Wrong boot partition...
  10. Convert MBR Disk to GPT Disk in Windows 10

    in Windows 10 Tutorials
    Convert MBR Disk to GPT Disk in Windows 10: Another option is to use mbr2gpt.exe, isn't it? 85750