How to fix error 0xc00000e9 with installed HDD + SSD drives?

Question

Windows

I am sure that among you there are those who are familiar with the solution to this problem.
I searched all over Google, but there is no sensible one. I don't want to lose data, it's very valuable, so converting to MBR is not a solution.

I have 2 systems installed (Windows 10 on HDD and SSD)
. On the HDD, the system is very old, since 2018 (but it is needed).
Installed on SSD literally this month (August 3).
The BIOS SEES the SSD, but does not see the Windows Boot Manager on the SSD. So it's loading from the HDD. I manually recreated the BCD (with a backup, of course), but the problem remained. I write from the system to the SSD. But how did I start it? Using this method, which I found by accident:
1. Insert and load a bootable USB flash drive (not simple, but with programs: regedit, recenv, partassist, etc.)
2. I select RecEnv, and then System Restore from a restore point
3. I select the last restore point, I wait until an error appears about the inability to restore, and then opens in English (the system on the SSD was English by default) system selection. I select the desired system (Windows 10 is simple, not Windows 10 Pro) and it starts up in seconds.

As for me, there is such a solution:
Create a partition on the SSD with a size of 100MB, completely copy the partition with boot data that lies on the HDD (J :). But I do not know how to make the BIOS display WIndows Boot Manager.
I think that it is precisely because there is no Windows Boot Manager on the SSD that such an error occurs.

I hope that you, dear Q&A participants, will help me with this problem. Because I don't want to start the system from <<pusher>> for 5 minutes.

Answer 1

bcdboot C:\windows
Where instead of C is the drive with the desired system.

Answer 2

and how much Windows Boot Manager is displayed in the BIOS or boot menu? perhaps one overwrote the other. then try using msconfig to set the boot timeout and configure the boot paths.