Strange problem with an xp that not exist


I try to explain my problem.Sorry for my poor english
After a lot of mistake I have now two Vista one (the good )in C another in D
Before the "wrong vista" in D I had here my old XP
I want to format drive D and delete wrong vista
Some days ago the electricity goes down and now It seems that my system detect again an Xp that not exist
Here is what Easy BCD detect (not directly I have to tell him where is the boot)

Windows Boot Manager
identifier              {9dea862c-5cdd-4e70-acc1-f32b344d4795}
device                  unknown
description             Windows Boot Manager
locale                  it-IT
inherit                 {7ea2e1ac-2e61-4728-aaa3-896d9d0a9f0e}
default                 {620a6b7a-d52d-11db-b4d6-ea5d0128a9d3}
resumeobject            {620a6b7b-d52d-11db-b4d6-ea5d0128a9d3}
displayorder            {466f5a88-0af2-4f76-9038-095b170dc21c}
toolsdisplayorder       {b2721d73-1db4-4c62-bf78-c548a880142d}
timeout                 10

Windows Legacy OS Loader
identifier              {466f5a88-0af2-4f76-9038-095b170dc21c}
device                  unknown
path                    \ntldr
description             Windows XP pro

Windows Boot Loader
identifier              {620a6b7a-d52d-11db-b4d6-ea5d0128a9d3}
device                  partition=C:
path                    \Windows\system32\winload.exe
description             Microsoft Windows Vista
locale                  it-IT
inherit                 {6efb52bf-1766-41db-a6b3-0ee5eff72bd7}
osdevice                partition=C:
systemroot              \Windows
resumeobject            {620a6b7b-d52d-11db-b4d6-ea5d0128a9d3}
nx                      OptIn

Can I only delete the "XP" entry and format D ?
Will the system reboot again?
THanks very much