How to accurately demolish CentOs7, so that at least Windows, which was next to the centos, starts up?

Question

Windows

Hello. two months ago I bought myself a laptop, with an internal hard drive 1TB and RAM 8 GB, uefi system. Windows 10 was originally installed, I decided to add a second Linux OS - Centos 7 (next to it). For specifics, first I’ll tell you in detail how I installed Centos: I allocated 200 GB for installation, during installation it came to disk partitioning. and here's how I partitioned: /boot efi - 512MB, / - 200GB and swap - 4000MB. the whole installation went and installed, next to the bootloader was the second Windows 10 OS, and it also started normally. in general, everything is in order. two months later I decided to change the Distribution. That is, instead of centos, install Ubuntu. I really like this operating system. I give a question just for safety net, how to do it accurately? how to demolish Centos and put ubuntu instead of it so that Windows 10 does not disappear ??? I need Windows OOOOOchen. Of course, I understand Google to the rescue, but it's better to ask you, as professionals, and who have already had experience with this! It is very important.

Answer 1

not to disappear

Use one of the many disc imaging programs.