Windows 10: Can’t reset MBR in command prompt

Discus and support Can’t reset MBR in command prompt in Windows 10 BSOD Crashes and Debugging to solve the problem; I’m running windows 10 on macbook pro bootcamp and I’m trying to salvage my system without losing anything i’m getting BSOD but before, i used to try... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by adhamabdal, May 23, 2020.

  1. ADHAMABDAL
    adhamabdal Win User

    Can’t reset MBR in command prompt


    I’m running windows 10 on macbook pro bootcamp and I’m trying to salvage my system without losing anything

    i’m getting BSOD but before, i used to try to reboot a few times and eventually i would be able to get in, not anymore all of a sudden. i’m trying to reset my mbr

    attrib c:\boot\bcd -h -r -s
    gives me
    c:\boot not found


    Bootrec /RebuildBcd
    gives me
    Total identified Windows installations: 1

    but then when i get to
    C:\Windows Add installation to boot list? Yes<Y>/No<N>/All<A>
    i choose yes which leads to
    the requested system device cannot be found

    i’m not experienced enough here to know what i’m doing so any help is useful

    :)
     
    adhamabdal, May 23, 2020
    #1
  2. CWTECH
    cwtech Win User

    command prompt will not open in safe mode with command prompt

    Would I just follow the same steps within safe mode after hooking up to the other system?
     
    cwtech, May 23, 2020
    #2
  3. RONALDCOUPE
    RonaldCoupe Win User
    mbr problem cannot access command prompt

    trying to repair mbr problem cannot load windows so cannot use uac controls at command prompt
     
    RonaldCoupe, May 23, 2020
    #3
  4. COATH4NGER
    CoatH4nger Win User

    Can’t reset MBR in command prompt

    clone MBR HD to bootable GPT partition?

    Hi,

    1. You cannot convert mbr to gpt without data loss. otherwise, you can follow directions here:

    FROM WINDOWS RECOVERY CONSOLE:

    To change a master boot record disk into a GUID partition table disk using a command line


    • Back up or move the data on the basic master boot record (MBR) disk you want to convert into a GUID partition table (GPT) disk.

    • Open an elevated command prompt (right-click Command Prompt, and then click Run as Administrator) and type diskpart. If the disk does not contain any partitions or volumes, skip to step 6.

    • At the DISKPART prompt, type list disk. Make note of the disk number you want to convert.

    • At the DISKPART prompt, type select disk <disknumber>.

    • At the DISKPART prompt, type clean.

    2. I'd suggest converting your vista drive to a virtual machine, load that up on your windows 10 system and use a program like virtualbox to run it.
     
    CoatH4nger, May 23, 2020
    #4
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Can’t reset MBR in command prompt

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