https://superuser.com/questions/1217793/boot-win-8-1-partition-cloned-from-mbr-disk-to-empty-space-in-gpt-disk-with-exis

Boot Win 8.1 Partition cloned from MBR disk to empty space in GPT Disk with existing Preinstalled Win 8.1 Partition? Boot Entry & Windows fix?  

I can easily press F12 at boot and choose between  

- Legacy BIOS Options and
- UEFI Options - namely Windows Boot Manager  
 - Probably points to the ESP FAT partition on HDD2 - GPT

HDD & Partition layout as shown in Paragon HDM

[![enter image description here][1]][1] - https://i.stack.imgur.com/5QyU2.png

Now, I am cloning

- W81_SP_CP2 (BIOS booting) - From HDD 1 - MBR

- To - Unallocated Space - on HDD 2 - GPT

HDD 2 already has OS_W81 (UEFI Booting) - Preinstalled

Now, given "boot mechanisms" of Legacy CSM BIOS as well as UEFI,
I believe there may be no way to boot the copy of W81 (.. Let me call it W81_BIOS) from HDD 2 until it becomes W81_EFI.  
**Is that true?**  

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[![enter image description here][2]][2]  - https://i.stack.imgur.com/9KY34.png 

PS - Paragon HDM does give me an option (Wizard UI link) to do/ convert/ add an EFI booting post cloning, but given its wording I am concerned/ wondering if it will "replace" / damange the existing entry for Preloaded OS_W81.  

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I'd rather add a boot entry for W81_BIOS > EFI myself, using `BCDBOOT / BCDEDIT / EasyBCD or Easy UEFI` etc type of stuff in a known controlled manner rather than Paragon HDM doing something.

I'm guessing this might be 2 steps:  

- EFI Boot Entry: How do I do that? Using bcdboot? or EasyUEFI/ BCD type of tool? Recommendation? 
 
- How I cloned it? (Using Paragon HDM > Copy Partition Wizard).
Do I have to make any changes/ adjustments to the "cloned" Windows ?

  [1]: https://i.stack.imgur.com/5QyU2.png
  [2]: https://i.stack.imgur.com/9KY34.png

Edited June 9, 20179 yr by crashnburn4u
Image Links Fix

18 hours ago, crashnburn4u said:

https://superuser.com/questions/1217793/boot-win-8-1-partition-cloned-from-mbr-disk-to-empty-space-in-gpt-disk-with-exis

 

... and:

http://reboot.pro/topic/21538-booting-2-windows-partitions-on-single-hdd-one-via-uefi-vs-one-via-csm-bios-possible/

jaclaz