Windows 10: No disk drive found after converting from gbt to mbr

Discus and support No disk drive found after converting from gbt to mbr in Windows 10 Installation and Upgrade to solve the problem; I was trying to re-install windows from a usb boot. once i got to the page it said windows cannot be installed to disk of the gbt partition, so i... Discussion in 'Windows 10 Installation and Upgrade' started by TyL_552, Jun 13, 2024.

  1. TYL_552
    TyL_552 Win User

    No disk drive found after converting from gbt to mbr


    I was trying to re-install windows from a usb boot. once i got to the page it said windows cannot be installed to disk of the gbt partition, so i searched google to fix it. Then, I booted from the usb to change disk to mbr. That did not work either. So i reset my computer, now i cannot access the window installation and i cannot open command prompt to change it back. Is there a way to fix?

    :)
     
    TyL_552, Jun 13, 2024
    #1
  2. MEGAHERTZ
    Megahertz Win User

    Resolving converting MBR to GBT converting boot issue

    The question is: - If it has no Active partition, how is it booting a MBR drive? - If it has no EFI partition, how is it booting a GPT drive? The only explanation is that JerometheGiraff has used one of those applications to convert a MBR drive into a GPT drive and now has an un boot able drive. Open Disk Manager -Under View select Top - Disk List
    No disk drive found after converting from gbt to mbr 371519d1593266941t-resolving-converting-mbr-gbt-converting-boot-issue-dm3.jpg
    Post the image here as an attachment
     
    Megahertz, Jun 13, 2024
    #2
  3. MEGAHERTZ
    Megahertz Win User
    Resolving converting MBR to GBT converting boot issue

    Your drive is still Legacy-MBR. It hasn't been converted to UEFI-GPT. Follow this steps one by one. Open a CMD window as administrator and type: Code:
    -Shutdown, detach (SATA or power cable) of ALL other drives from MB. Leave only C: attached. - Boot from Win 10 or Win 11 installation drive. At the Windows Setup screen, press Shift+F10 simultaneously to open a command line prompt. Type: Code:
    -Shutdown - Change BIOS mode to UEFI. - Boot the drive as UEFI. - Run Reagentc /enable - Shut down and attach all other drives to the MB
     
    Megahertz, Jun 13, 2024
    #3
  4. JEROMETHEGIRAFF
    JerometheGiraff Win User

    No disk drive found after converting from gbt to mbr

    Resolving converting MBR to GBT converting boot issue

    No disk drive found after converting from gbt to mbr 371493d1658365314t-resolving-converting-mbr-gbt-converting-boot-issue-diskmanagment.jpg
    This is after most of the drives are disconnected.
     
    JerometheGiraff, Jun 13, 2024
    #4
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No disk drive found after converting from gbt to mbr

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