I Can't to install Windows 10 because MBR

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  1. Posts : 130
    Windows 10 Pro 21H2 (COMP. 19044.1826) x 64
       #1

    I Can't to install Windows 10 because MBR


    Hello, everybody!:
    My PC has arrived to my house. But When I go to install Windows 10, the installation program tell me that it's not possible, because the partition of SSD where I go to install has the system MBR and the UEFI BIOS only accept GPT.
    The question: How can I to install Windows 10 if I can't to access to SSD?

    SSD: Samsung 970 EVO Plus 250 GB, M.2, NVMe, SATA 6 GB/s, with MBR partition.
    MB: B450M DS3 rev. 1.0
    BIOS version: F60C (Installed by the dealer of PC).
    OS: don't exists. I want to install Windows 10 last version Pro x 64.

    Thank you very much, in advance.
      My Computer


  2. Posts : 56,806
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       #2

    A dealer sold you a new PC and did not include an installed OS? I'm just verifying. Thanks.
      My Computers


  3. Posts : 18,044
    Win 10 Pro 64-bit v1909 - Build 18363 Custom ISO Install
       #3

    Hello @Enrique,

    Enrique said:
    My PC has arrived to my house. But When I go to install Windows 10, the installation program tell me that it's not possible, because the partition of SSD where I go to install has the system MBR and the UEFI BIOS only accept GPT.
    The question: How can I to install Windows 10 if I can't to access to SSD?
    [1] I assume that you are talking about a clean install?
    [2] Where did you get the ISO from to create the installation media?
    [3] When installing did you delete ALL the existing partitions leaving a single unallocated partition?
    [4] Have a look at this => How to Create Bootable USB Flash Drive to Install Windows 10 from

    I hope this helps!
      My Computer


  4. Posts : 130
    Windows 10 Pro 21H2 (COMP. 19044.1826) x 64
    Thread Starter
       #4

    f14tomcat said:
    A dealer sold you a new PC and did not include an installed OS? I'm just verifying. Thanks.
    Thank you, Tom. I'm waiting for a solution.

    - - - Updated - - -

    Paul Black said:
    Hello @Enrique,



    [1] I assume that you are talking about a clean install?
    [2] Where did you get the ISO from to create the installation media?
    [3] When installing did you delete ALL the existing partitions leaving a single unallocated partition?
    [4] Have a look at this => How to Create Bootable USB Flash Drive to Install Windows 10 from

    I hope this helps!
    Is the SSD who have the MBR partition. So I can't to install (clean) Windows 10. I've created an USB in GPT partition with Rufus.
      My Computer


  5. Posts : 56,806
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       #5

    Enrique said:
    Thank you, Tom. I'm waiting for a solution.
    I'm sorry, but you didn't answer my question. Did a dealer sell you a new PC and not include an installed OS?

    Second, what exactly is the "Installation program" you are referring to? Thanks.
      My Computers


  6. Posts : 56,806
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       #6

    It's the Dealer's responsibility to deliver a system plug-and-play. If the Seller/Buyer agreement in Spain do not require an OS be installed as part of the OEM agreement, then the Dealer is responsible for making the "blank/empty" SSD usable to the buyer.

    The drive (SSD) needs to be initialized GPT, not MBR. Dealer should do that for you. If that is not possible, please tell us what software was shipped with the PC so we can tell you what you need to do to initialize the drive GPT. GPT is the best choice. Yes, there are ways to change the BIOS to allow UEFI and legacy and MBR and all that, but GPT is the proper way to go.
      My Computers


  7. Posts : 130
    Windows 10 Pro 21H2 (COMP. 19044.1826) x 64
    Thread Starter
       #7

    f14tomcat said:
    I'm sorry, but you didn't answer my question. Did a dealer sell you a new PC and not include an installed OS?

    Second, what exactly is the "Installation program" you are referring to? Thanks.
    Well. I don't now why my SSD is MBR. But so it goes. So I must to install from an USB with Windows 10 (GPT) in this SSD. The "program instalation is the Windows in the USB. This can't be another.
    None software was shipped with this SSD (none OS).
    If you understand what I need, do you know any kind of solution? Please, tell me about it.

    Problem: an SSD (where I want to install the OS Windows) with MBR partition. I must to change to GPT. I have an USB with Windows 10 last version in GPT mode via Rufus. QUESTION: How can I to change from MBR to GPT?
      My Computer


  8. Posts : 6,247
    Windows 11 Pro - Windows 7 HP - Lubuntu
       #8

    Windows can be installed in two ways: Legacy-MBR or UEFI-GPT
    To install as Legacy-MBR you must boot the installation drive as Legacy
    To install as UEFI-GPT you must boot the installation drive as UEFI.

    During POST, press F12 to launch the boot menu. You will see two options for the USB drive. USB UEFI (Name) and USB (Name). Select USB UEFI (Name).
    Go to install and delete ALL partitions on the SSD till you have one and only one unallocated space and then proceed.
      My Computers


  9. Posts : 41,413
    windows 10 professional version 1607 build 14393.969 64 bit
       #9

    How are you planning to activate the Windows 10 iso?
      My Computer


  10. Posts : 130
    Windows 10 Pro 21H2 (COMP. 19044.1826) x 64
    Thread Starter
       #10

    zbook said:
    How are you planning to activate the Windows 10 iso?
    This question is out of order, please. The activation proccess can to begin when the OS was inside the SSD.
      My Computer


 

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