I ran:
BCDBoot C:\Windows
I got a Success message
but when went boot getting an error: // DVD boot from was 21H1 but OS is 20H2, is it matters? Following is the Log file,...well?

when went to repair getting:

Logfile:
Startup Repair diagnosis and repair log
Last successful boot time: 10/12/2021 6:25:29 AM (GMT)
Number of repair attempts: 40
Session details
System Disk = \Device\Harddisk0
Windows directory = C:\Windows
AutoChk Run = 0
Number of root causes = 1
Test Performed:
Name: Check for updates
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Disk failure diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 671 ms
Test Performed:
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 16 ms
Test Performed:
Name: Target OS test
Result: Completed successfully. Error code = 0x0
Time taken = 16 ms
Test Performed:
Name: Volume content check
Result: Completed successfully. Error code = 0x0
Time taken = 93 ms
Test Performed:
Name: Boot manager diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: System boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Boot manager generic failure 0xc000000e
Test Performed:
Name: Event log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 32 ms
Test Performed:
Name: Internal state check
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Check for installed LCU
Result: Completed successfully. Error code = 0x0
Time taken = 3922 ms
Test Performed:
Name: Check for installed driver updates
Result: Completed successfully. Error code = 0x0
Time taken = 1312 ms
Test Performed:
Name: Check for pending package install
Result: Completed successfully. Error code = 0x0
Time taken = 2750 ms
Root cause found:
A recently serviced boot binary is corrupt.
Repair action: Abort pending update installations
Result: Failed. Error code = 0x82f
Time taken = 4109 ms
Session details
System Disk = \Device\Harddisk1
Windows directory = D:\WINDOWS
AutoChk Run = 0
Number of root causes = 1
Test Performed:
Name: Check for updates
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Disk failure diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 735 ms
Test Performed:
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 15 ms
Test Performed:
Name: Target OS test
Result: Completed successfully. Error code = 0x0
Time taken = 16 ms
Test Performed:
Name: Volume content check
Result: Completed successfully. Error code = 0x0
Time taken = 78 ms
Test Performed:
Name: Boot manager diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: System boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Event log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 31 ms
Test Performed:
Name: Internal state check
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Root cause found:
Startup Repair has tried several times but still cannot determine the cause of the problem.
Session details
System Disk = \Device\Harddisk1
Windows directory = D:\WINDOWS
AutoChk Run = 0
Number of root causes = 1
Test Performed:
Name: Check for updates
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Disk failure diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 734 ms
Test Performed:
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 16 ms
Test Performed:
Name: Target OS test
Result: Completed successfully. Error code = 0x0
Time taken = 16 ms
Test Performed:
Name: Volume content check
Result: Completed successfully. Error code = 0x0
Time taken = 93 ms
Test Performed:
Name: Boot manager diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: System boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Test Performed:
Name: Event log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 16 ms
Test Performed:
Name: Internal state check
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms
Root cause found:
Startup Repair has tried several times but still cannot determine the cause of the problem.