Windows 10: How to remove duplicated OS on separate HDD, and how to store OS and boot manager on a...

Okay this is going to be a long story: Previous setup: 1 SSD as OS, 1 HDD HDD-A which somehow later found out has a Windows Boot Manager, and 1 HDD HDD-B. System: Win10 Home, version 22H2I was getting a new desktop so I removed HDD-A, and unleashed a whole disaster. The computer won't boot and went straight to 'Install Windows'. Not knowing why it does this, and having no room on SSD, I opted to install a new Windows on HDD-B. And regretted very soon, because now it only boot from HDD-B with the new OS. While I can still access the SSD and saw the original OS with all the documents and sav

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Windows 10 Boot manager removal for dual OS on SSD and HDD

Shrink the OS on the HDD by about 150MB. MiniTool Partition Wizard Free is very good for that. Then open a Command Prompt or PowerShell and run diskpart.

Once in diskpart the commands are:
list disk
select disk # <-replace # with the actual number for the HDD
create part efi
format fs=fat32 quick
assign letter=t
exit

Then in a command prompt (admin) or "run as administrator" command prompt run:

bcdboot C:\Windows /s T: /f all

Note - the drive letter in red needs to be the Windows installation on the HDD. If you are booted into the OS on the HDD, it should be C:. It might be E: or F: or something else if you are booted into the OS on the SSD. Just make sure you do the above commands all from the same OS.

That should make the HDD bootable by itself. When you are done, and it is booting from F12, you can remove the drive letter T: from the EFI partition, and remove the dual boot menu from the SSD by using the msconfig command.

 

Removing Windows Boot Manager

Hello, i have two Windows 10 install side by side partitioned in one storage What i want to achieve is to remove the windows boot manager and let the two OS register is BIOS/UEFI boot menu i don't want always to see the Windows boot manager whenever i open my PC because i separated my Working OS and Gaming OS and i only play at weekend. That's why i thought why not just remove windows boot loader and just select the OS that i want to use in Boot Menu. I already did this before but i just got lucky that it works and i don't have a definite steps by steps to do it again. I hope someone can help me

 

Removing windows os from SSD and boot from hdd

I have cloned my ssd to hdd using macrium and used easybcd for dual booting.but now i only want to boot from hdd and remove windows os from ssd.what should i do?