Windows 10: W11 on SSD won't boot to login unless former SSD with W10 is attached to PC

I bought a new SSD and installed Windows 11 on it but anytime I want to boot to it, I can't unless my former drive with now inactive Win 10 installed on it is also attached to the PC.I am on a Z390-H with 9900K. My W11 drive is on the CPU M.2 and the former W10 is on the chipset M.2 slot. I have used BIOS to change the boot order and used CSM but the trouble is that it won't boot into it directly without having selected WINDOWS BOOT MANAGER drive from the boot order. If I don't have the W10 drive attached I can't access my W11 at all.There is a 553MB partition recovery part but on the W10

:)

 

How to transfer W10 License to W11

I stupidly thought that if I was going to have a new PC, I might as well put W11 on it and, as I mentioned, having had problems which could not be solved with one PC when I upgraded from W7 to W10, I got afraid of having something similar happen when switching from W10 to W11, silly of me I guess, especially now that I find out that W11 is still half baked with (luckily until now) small problems that are more irritating than crimpling. I actually blew a couple of dollar on an additional 1TB SSD-M2 yesterday to do just what you suggest and I feel like a fool for buying W11.

 

New windows 10 installtion on New SSD - wont boot unless old SSD present

It seems you installed Windows while the both SSDs were connected. This would have caused your current problem. Maybe it is sufficient to do this:

1. Launch the Disk Manager.
2. Right-click drive C:, then mark it as "active".
3. Shut down Windows
4. Open the BIOS and tell it that the new SSD is the primary boot device.
5. Disconnect the old SSD.
6. Boot up normally.

If this does not work then you might have to do this:

1. Disconnect the old SSD.
2. Re-install Windows on the new SSD, using the Media Creation Tool.

 

After Installing an SSD my computer won't boot unless I disconnect my external drive

Hi Richard,

We'd like to request for additional details about the boot issue while the SSD is installed on your PC. Please answer the following:

• What is the make and model of your SSD?
• What build and version of Windows 10 are you using?
• What troubleshooting steps have you tried so far?
• Have you tried the SSD on a different PC and experience no issue?
• Are you getting an error code or message?

We hope to hear from you soon.