HOW TO CONVERT GPT TO MBR USING COMAND PROMPT

Convert GPT to MBR using Command Prompt

If you’re not able to boot into Windows (Vista, 7 or 8) to run Disk Management and perform the converting process, you can also use Command Prompt (either from the original installation disc/USB or via Command Prompt from Easy Recovery Essentials).
You can perform these steps either by booting into Windows and running Command Prompt from Start > Run > cmd or by using the original installation disc to open Command Prompt, if you can’t access Windows.
To do so, follow these steps:

1. Insert the Windows installation disc and restart your computer
2. Boot from the disc by pressing any key at the “Press any key” screen
3. Go to System Recovery Options
   

   Windows Vista System Recovery Options
   

   Windows 7 System Recovery Options Screen
4. Click Command Prompt
5. Type:
   
   

   diskpart

6. Press Enter
7. Type:

   list disk

8. Press Enter
9. Remember the number of the disk (example: 2) you want to convert.
10. Type:

    select disk 2

    Where 2 is the number of the disk that’s going to be converted.
11. Press Enter
12. Type:

    clean

13. Press Enter
14. Type:

    convert mbr

15. Press Enter
16. Disk #2 is now being converted
17. You can type exit and hit Enter in Command Prompt to exit or continue setting up partitions on the new MBR disk.

To create new partitions using Command Prompt, follow these instructions:

1. Type:

   create partition primary

2. Press Enter
3. Type:

   list volume

4. Press Enter
Make sure the new volume is selected (look for the * on the left side) before you format the partition

5. Type:

   format fs=ntfs

6. Press Enter
7. Type:

   exit

8. Press Enter