So this is ****.
I've tried everything I've read about the problem, went into MSCONFIG and turn off all Services and Startup.
No matter what I do, the Win 10 install goea from 85% to 91%, then reboots, shows a screen Reverting, and I end up back in Win 7.
I got Win 10 to install a year ago when I had this problem and found a fix, now I can't find/remember what the fix/issue was that allowed Win 10 to install without this Migrate Data error.
Here is what the last error log files shows:
2021-10-21 10:13:27, Error IO error while loading journal C:$WINDOWS.~BT\Store\MachineIndependent\Completed.xml. Message: Should be at the most one <Apply> element.
2021-10-21 10:13:27, Error MigOpenUpgradeStore caught exception: FormatException: Should be at the most one <Apply> element. enum MIGSTATUS __cdecl MigOpenUpgradeStore(class UnBCL::String *,class UnBCL::String *,class UnBCL::ArrayList<class UnBCL::DictionaryEntry<class UnBCL::String *,class UnBCL::String *> *> *,class UnBCL::ArrayList<class UnBCL::DictionaryEntry<__int64,class UnBCL::String *> *> *,class UnBCL::String *,struct IWIMBootHelper *,class UnBCL::String *,class UnBCL::String *,int)
2021-10-21 10:13:27, Error SP pSPExecuteApply: Cannot create the hardlink store. Error: 0x00000004
2021-10-21 10:13:27, Error SP Apply (oobe boot apply, online phase): Migration phase failed. Result: 4, no specific error[gle=0x00000002]
2021-10-21 10:13:27, Error SP Operation failed: OOBE boot apply. Error: 0x8007001F[gle=0x000000b7]
2021-10-21 10:13:27, Error SP Operation execution failed: 13. hr = 0x8007001F
2021-10-21 10:13:27, Error SP ExecuteOperations: Failed execution phase Pre OOBE Boot. Error: 0x8007001F
2021-10-21 10:13:27, Error SP Operation execution failed.
2021-10-21 10:13:27, Error SP CSetupPlatformPrivate::Execute: Failed to deserialize/execute pre-OOBEBoot operations. Error: 0x8007001F
2021-10-21 10:14:13, Error MIG Ignoring replacement manifest with no settingsVersionRange or versionRange attribute in migration element: Microsoft-Windows-Container-Manager
2021-10-21 10:14:14, Error IO error while loading journal C:$WINDOWS.~BT\Store\MachineIndependent\Completed.xml. Message: Should be at the most one <Apply> element.
2021-10-21 10:14:14, Error MigOpenUpgradeStore caught exception: FormatException: Should be at the most one <Apply> element. enum MIGSTATUS __cdecl MigOpenUpgradeStore(class UnBCL::String *,class UnBCL::String *,class UnBCL::ArrayList<class UnBCL::DictionaryEntry<class UnBCL::String *,class UnBCL::String *> *> *,class UnBCL::ArrayList<class UnBCL::DictionaryEntry<__int64,class UnBCL::String *> *> *,class UnBCL::String *,struct IWIMBootHelper *,class UnBCL::String *,class UnBCL::String *,int)
2021-10-21 10:14:14, Error SP pSPExecuteApply: Cannot create the hardlink store. Error: 0x00000004
2021-10-21 10:14:14, Error SP Apply (oobe boot apply, online phase): Migration phase failed. Result: 4, no specific error[gle=0x00000002]
2021-10-21 10:14:14, Error SP Operation failed: OOBE boot apply. Error: 0x8007001F[gle=0x000000b7]
2021-10-21 10:14:14, Error SP Operation execution failed: 13. hr = 0x8007001F
2021-10-21 10:14:14, Error SP ExecuteOperations: Failed execution phase Pre OOBE Boot. Error: 0x8007001F
2021-10-21 10:14:14, Error SP Operation execution failed.
2021-10-21 10:14:14, Error SP CSetupPlatformPrivate::Execute: Failed to deserialize/execute pre-OOBEBoot operations. Error: 0x8007001F