Windows 10: dual boot Win8.1 with Win7 ,reboot after I select Win 7

Hi guys.
I know this is not W8.1 forum but I assume it's the same like with W10.
I have dual boot on this laptop and each time I select W7 in boot laptop restarts (turns off and turn on) and then it boots to W7.
Why does it happen,and how can I boot to W7 without reboot,just normal procedure?

:)

 

Dual boot win10 and win7

Lenovo T520 with Win7 Pro installed on msata ssd is Drive C:. HD with data is drive E:. Laptop has dvd but with adapter, this now has another ssd.

I cloned drive C: to the blank ssd in dvd port.

I then removed the msata ssd and rebooted. Win7 came up fine.

Now downloading and installing Wkn10 upgrade to win7 on the new ssd.

Once I have Win10 up and running,plan is to reinstall the msata ssd with Win 7 with view to being able to dual boot Win 7 & 10.

Is there anything else I need to do in order for a menu to appear offering a choice of which OS to boot?

When updates to either system require a restart, will they automatically restart the original OS?

Appreciate some guidance. Thankz

 

Dual Boot issues (Win7/10) and data corruption


Looking at your system specs. You do have a pretty good system and UEFI support:
Gigabyte GZ-z97X-Gaming 3, i7 4970K......

Your Disk 0 looks OK with Windows 7 installed using MBR partition scheme.
However, your Disk 1 does not look standard with Windows 10 installed also using MBR partition scheme and might get confused with Windows 7 when boot up.

Normally for Windows 10 installation, you'd would get 500MB (not 350M as you said above, it's true for Windows 8) System Reserved Partition and C drive.

Since your Disk 1 was initialized as MBR disk, that would limit the # of primary partitions to 4 so drives: F, H, I became logical drives.

Here's my suggestion:

1. Download and install: MiniTool Partition Wizard with Window 7 running. Run and right click on Disk 1 ( Minitool show it as Disk 2) then select convert to GPT disk.
2. Right click on Windows 10 drive and delete this partition then click Apply to commit the changes of step 1 & 2. Might take a while to complete converting 1TB HD.
3. Disconnect Disk 0 and boot up Windows installation Media with UEFI Mode selected.
4. Select Custom->Hi Lite the unallocated partition (do not format) then click Next to install Windows 10.
5. Once done, you'd get 4 partitions:
   450MB Recovery
   100MB EFI System
   16MB MSR
   C drive
   F,H,I will become Primary partitions.
6. Reconnect Disk 0 (Win 7)
7. Use F12 to select which Windows to boot from.

NOTE: Make sure in BIOS you have "Boot Mode Selection set to both "UEFI and Legacy"

Here's how I set up my Windows 7 on disk 1 & 10 on disk 0.

Windows Media Center in Windows 10:
Here is how to install Media Center on Windows 10

 

reboot and select property boot device

You need to set your main Harddrive which has your Operating System on as the first harddrive to boot, if have more than one harddrive.

open Bios
boot priority
Select the OS harddrive as first boot drive , If not sure switch between them
Set correct time and date if wrong
Save and reboot

If not sure on steps , give the Make and model number of motherboard and can assist you.

Hopefully no damage to the HDD