Windows 10: Add new OS to boot menu

Hey all, I'm trying to add a cloned SSD with an existing Win10 OS on it to a new Lenovo Ideacentre workstation . The Lenovo has an M.2 drive (GPT) where the system partition/ boot menu resides as well as its own OS. The cloned SSD drive is MBR but I have been able to get these workstations to boot from cloned MBR drives through BCDboot line commands in the past on other machines. What is the proper command line procedure for doing this? Kurt

:)

 

No startup boot menu

Hello Kimoefat,

Thank you for posting your concern in Microsoft Community and welcome to the Windows 10 Family.

As an initial recommendation, I would suggest you to access the System configuration utility and check if the Operating System installation path for Ubuntu exists. To do so, follow the below steps.

• Type msconfig in the search bar and select System Configuration from the search results.
• Select the boot tab in the System configuration console to check if the installation path for Ubuntu exists.

If it exists, next logical step is to check if the boot menu time out has been set to 0, which results in Boot menu not showing up.

The boot menu time-out determines how long the boot menu is displayed before the default boot entry is loaded. It is calibrated in seconds. To change the boot menu time-out, use the Bootcfg
/timeout switch. Valid values are from 0 through 999. You cannot use Bootcfg to set an indefinite time-out.

You can run the following Run command line to set the boot menu time-out accordingly. To do so, follow the below steps.

• 
  Press Windows key + X, select
  Command prompt (Admin) to bring up elevated Command prompt
  
• 
  Type in the following command: bootcfg /timeout 10
  
  timeout 10 will set the time frame to 10 seconds
  

However, if the Boot path for Ubuntu does not exist in the boot menu of System Configuration utility, I would suggest you to check if the Ubuntu is overridden by the Windows installation or if the Ubuntu installation files are corrupted.

Hope the above information is helpful. If you need further information, feel free to write to us and we would be happy to help you.

Thank You.

 

Black screen on Graphical Boot Menu [Dual Boot]

I have somewhat non-standard installation:

• SSD1: Windows 10 (1)
• SSD2: Windows 10 (2)
  

It was working fine for almost a year. User could select OS via Metro Boot Menu.

Recently one of Windows (1) got Creator Update.

Today graphic boot menu only shows black screen. I can still select what windows to boot using arrows and hitting enter (blindly), so it's kinda working. However it's super inconvenient and I would like to get graphic boot menu back.

I have 2 monitors if it's matter. Fast boot is turned off. EascyBCD shows no errors in bootmanager, metro menu is active. Both OS works fine when loaded.

Any suggestions what could cause this and how can I fix it? Is'it boot menu/windows problem or monitor/graphic drivers maybe?

 

Windows 10 Boot Menu Problem (Have to load OS manually every time)

cereberus & lx07, I tried both of your suggestions.
First, I checked EFI/Microsoft/Boot/en-US/bootmgfw.efi.mui and it loaded OS normally. So then using EasyUEFI I changed "Windows Boot Manager" to top of Boot Menu as lx07 mentioned. Then I restarted the system to check its working, the same error is arised as I explained in this Thread.
Then, I tried my luck with Macrium Reflect as cereberus mentioned. Here are the images of them







It asked for restart and I restarted with same error and manual loading of OS.

But the strange thing now happened is that when I manually loaded my OS after above steps, Windows Boot Manager is not shown in EasyUEFI then I tried lx07's suggestion of Keeping rEFInd Booting#bcdedit
Now Finally this is what shown in EasyUEFI




Boot Options Menu of my Laptop - For Reference