Question Boot confusion

[Ilias Paraskevopoulos]

Hi everyone, i have upgraded my system today,

I upgraded my MB, M2 SSD, CPU

MB is Z390-A PRO
M2 SSD is Samsung SSD 970 EVO 250GB
CPU is i7 8700K

and i was trying to clone my old SSD to the new M2 SSD with no success.

So, i decided to do a fresh installation to the new SSD.

Right now when i choose from the boot sequence (in BIOS) to boot from the M2 ssd, i get the message that i dont have an OS installed there.

My old SSD is a SanDisk SDSSDA480G - which still has the older version of Windows installed.

When i set the #1 boot option the old SSD, i get this message and Windows load from the new M2 SSD (!!!!)

And here's the proof

So the summarized question, is it possible my 970evo Booting through the old SSD sandisk?

I would like to set this boot sequence properly.
Thanks

 

[USAFRet]

Did you have both drives connected when you installed on the new M.2 drive? It appears so, if you're seeing that menu to choose from.
Then yes...the boot partition lives on the old drive, and holds info for both. The new drive has no boot partition.

 

[Ilias Paraskevopoulos]

Did you have both drives connected when you installed on the new M.2 drive? It appears so, if you're seeing that menu to choose from.
Then yes...the boot partition lives on the old drive, and holds info for both. The new drive has no boot partition.

How do i fix that? Disconnect the old drive and reinstall in the new one?

 

[USAFRet]

How do i fix that? Disconnect the old drive and reinstall in the new one?

If this is a new install, yes. That is the easiest way forward.
Disconnect ALL other drives, and redo it.

How To - Windows 10 clean install tutorial

If you are looking for the Windows 11 Clean install tutorial, you can find that here: Windows 11 Clean install tutorial (Click here) Otherwise, welcome to the Windows 10 Clean install tutorial This tutorial is intended to help you, step by step, to perform a clean install of Windows...

forums.tomshardware.com

 

[Ilias Paraskevopoulos]

If this is a new install, yes. That is the easiest way forward.
Disconnect ALL other drives, and redo it.

How To - Windows 10 clean install tutorial

If you are looking for the Windows 11 Clean install tutorial, you can find that here: Windows 11 Clean install tutorial (Click here) Otherwise, welcome to the Windows 10 Clean install tutorial This tutorial is intended to help you, step by step, to perform a clean install of Windows...

forums.tomshardware.com

Thanks a lot, i ll try that