Windows 10: mbr gpt partition help

hello guys I need help, in windows 10 I converted the ssd disk with mbr partition to gpt using the mbr2gpt / convert command from cmd. Everything works perfect and windows works in uefi mode.
but it turns out that I want to install on another partition of another hard drive (HDD mbr ntfs) windows 7 and during installation it tells me that windows cannot be installed on the selected partition and before the conversion I could install it.
The first thing I thought is to convert the ssd to mbr again, with minitool partition wizard but in the attempt I get a sign saying that the disk contains system partitions and could be unbooteable.
also what I have set is that since I made the gpt convertion I get on the disk ssd 2 more partitions:
efi system partition
OEM partition (System Reserved)
I comment that I tried all the options from the bios and nothing worked for which I ask for your help to be able to also install the windows 7 on the other hard disk hdd as I did before,
having both operating systems. thanks all i hope your help...

:)

 

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.

 

Convert only one partition on the disk from MBR to GPT

Follow the steps listed here on using GPTgen. He also lists how to create and restore backups.

Converting MBR to GPT without deleting your partitions

 

Convert only one partition on the disk from MBR to GPT

Hi,

Yes

Without deleting all partitions you can achieve this. Just use a disk converter named an AOMEI Partition Assistant Professional Edition.

The Simplest Way to Convert MBR Partition Table to GPT

Step 3:
in this document

AOMEI Partition Assistant Lite Edition.
It’s a free multifunction partition management software. This tool’s feature can help you convert a disk with data into GPT or MBR style without data loss.