Windows 10: How do i install windows 10 without csm Solved

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  1.    27 Jun 2018 #1

    How do i install windows 10 without csm


    Hello,

    I have a problem that i installed windows 10 with csm enabled so when i go into bios and turn off csm my system doesn't boot up and there is no boot options. I want to reinstall it with csm disabled but i don't know how. I have windows 10 home 64bit original usb stick. I don't know what to do i need help.

    My PC specs are: Mobo: gigabyte b360m ds3h
    cpu: i3 8100
    gpu: msi gtx 1050ti
    psu: 600w xfx
    ram: goodram iridium 2133 mhz 2x 4gb
    hdd: toshiba 1tb
      My ComputerSystem Spec

  2. Caledon Ken's Avatar
    Posts : 10,584
    Windows 10 Pro x64 Build 1803
       27 Jun 2018 #2

    Hi dejwiu

    Here is the clean install tutorial.

    Clean Install Windows 10

    It walks you through getting the newest Windows 10 using the media creation tool V1803 ( a link to another tutorial).

    With a clean install you lose all apps and data so please ensure you have your personal data backed up off machine.

    You also want to ensure your disk is GPT and not MBR.

    https://docs.microsoft.com/en-us/win...artition-style

    Ken
      My ComputerSystem Spec

  3. EyeInTheSky's Avatar
    Posts : 222
    Windows 10 Home x64 - Version 1809 (OS Build 17763.55)
       27 Jun 2018 #3

    I don't know if this will be helpful or not, but I came across this the other day and think it is pretty slick.

    I don't know what the "csm" is that is being referred to; but if converting his disk to one or the other is the only problem, then this might be a viable option:


    Method 1. Convert MBR to GPT or GPT to MBR with Command Prompt with no data loss

    1. Press Win + R to open Run dialog > Type: cmd and hit Enter to bring up Command Prompt;

    2. Type: diskpart.exe and hit Enter to open DiskPart window;

    3. Type: list disk and hit Enter;

    4. Type: select disk g (Replace g with the drive letter or your disk that you want to change it to MBR or GPT

    5. Type: convert mbr or convert gpt and hit Enter;

    Let the program do the disk conversion task and then you'll get wanted partition table in your disk.

    6. Type: exit to finish the task.
      My ComputerSystem Spec

  4. Bree's Avatar
    Posts : 8,809
    10 Home x64 (1809) (10 Pro on 2nd pc)
       27 Jun 2018 #4

    EyeInTheSky said: View Post
    I don't know what the "csm" is that is being referred to...
    Just another name for Legacy boot...

    To ensure backward compatibility, most UEFI firmware implementations on PC-class machines also support booting in legacy BIOS mode from MBR-partitioned disks, through the Compatibility Support Module (CSM) that provides legacy BIOS compatibility.
    https://en.wikipedia.org/wiki/Unifie...ce#CSM_booting
      My ComputersSystem Spec

  5. EyeInTheSky's Avatar
    Posts : 222
    Windows 10 Home x64 - Version 1809 (OS Build 17763.55)
       27 Jun 2018 #5

    Bree said: View Post
    Just another name for Legacy boot...

    Thanks!


    Also, do you think the OP's problem with disabling Legacy Boot in the BIOS is because his disk is MBR and not GPT?
      My ComputerSystem Spec

  6.    27 Jun 2018 #6

    but the problem is guys that i can install windows only with csm so i can't convert to gpt because i tried a while ago
      My ComputerSystem Spec

  7. Bree's Avatar
    Posts : 8,809
    10 Home x64 (1809) (10 Pro on 2nd pc)
       27 Jun 2018 #7

    dejwiu said: View Post
    but the problem is guys that i can install windows only with csm so i can't convert to gpt because i tried a while ago
    You should be able to boot from the Windows install stick in UEFI mode with CSM turned off. Your install sitck has the boot files to support both the UEFI and Legacy boot modes. You may need to turn off Secure Boot to allow booting from the USB though.

    https://www.gigabyte.com/us/Support/Faq/3001

    Apparently there may also be some 'difficulties' getting a Gigabyte to see the usb initially, so it may not be available as a UEFI boot option in the F12 boot choices. See if these threads help...

    TenForums | Windows 10 USB not detected

    https://arstechnica.com/civis/viewto...f=16&t=1329541
      My ComputersSystem Spec

  8.    27 Jun 2018 #8

    The secure boot is off by default. I think bios sees the usb since i can see it in usb configuration tab but not in boot priorities and options. I don't know what to do further. Help
      My ComputerSystem Spec

  9. EyeInTheSky's Avatar
    Posts : 222
    Windows 10 Home x64 - Version 1809 (OS Build 17763.55)
       27 Jun 2018 #9

    dejwiu said: View Post
    The secure boot is off by default. I think bios sees the usb since i can see it in usb configuration tab but not in boot priorities and options. I don't know what to do further. Help
    Did you try booting to the USB by using an Administrator X command prompt yet?
      My ComputerSystem Spec

  10.    27 Jun 2018 #10

    EyeInTheSky said: View Post
    Did you try booting to the USB by using an Administrator X command prompt yet?
    how to do that?
      My ComputerSystem Spec


 
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