Some boot issues after move SSD with OS to new HW – OS misses default boot entry

Basically I have all HW new except SSD holding OS and some support partitions. Previous MB was BIOS one. Actual UEFI.

I faced some boot issues that I somehow run over, i.e. I can boot to working system but some issues still persists.

Symptoms:

1. I cannot setup bcdboot c:\windows. There is Failure when attempting to copy boot files.

2. MsConfig.exe has empty boot tab.

3. Of bootrec commands works just /fixmbr:

   a) /FixBoot returns Access is denied.

   b) /ScanOs returns 1 expected result.

   c) /RebuildBcdreturns The requested system device cannot be found. after found installation confirmation (Add installation to boot list? Yes(Y)/No(N)/All(A):).

4. There is 4 times Windows Boot Manager option in UEFI but only 1 works.

5. OS drive backup using services fails (error code/crash) either with built-in or custom tool. Raw backup works, of course.

6. Recovery unit or drive (DVD) is not possible to create due some missing system files.

7. scf /scannow and DISM /Online /Cleanup-Image /RestoreHealth change nothing.

I search drive for BCD files inspecting their content finding there nothing useful. I suppose I need get bcdboot command running.

System drive is MBR (so it is not possible to create EFI partition using DISKPART).

Disk is not convertible to GPT (using MBR2GPT) since there is error FindOSPartitions: Cannot find default boot entry. Error: 0xC0000225.