how to convert HDD from mbr to gpt without deleting partitions or loosing data

Hey guys how are u doing ??
just have this small query im currently on windows 7 x64 i wanna install windows 10 x64 but the problem is i have 2 TB internal HDD there are 4 partitions on it when i try to install windows 10 on it , it give me an error that the hdd needs to be in gpt format i have seen many videos where u can simply convert ur hdd to gpt but u will need to delete all partitions which i dont wanna do coz i have large amount of data is there any software that can help me to convert mbr partition to gpt and then i can install windows 10 ??
your help will be highly appreciated Thanks
Answer #1
http://www.thewindowsclub.com/convert-mbr-to-gpt-disk
Answer #2
This is the best available
http://www.rodsbooks.com/gdisk/
Answer #3
As mentioned.. AOMIE Partition Assistant..
https://www..org/viewtopic.php?t=15575253&highlight=