How to format all computer drives?

Question

Iron

Hello! I installed ubuntu as a second system along with windows 10 but got errors. Tried a lot of tutorials. Nothing helped. I decided that I needed to reset all data from the disks, that is, format it (so that it was as if the computer had just assembled, without os and data). I have windows on ssd, ubuntu on hdd. How to do it? After formatting, I want to install only windows 10.
PS: I could find the information myself, but I'm not sure what can happen, given that it costs 2 os, also on different os.

Answer 1

So. Proceed from your questions I advise the following
Disable 1 disk, put Windows. The installer will allow you to remove partitions.
After
Turn off the disk with Windows, insert another one. Install ubuntu
After
Connect both disks, use f11 to choose which one to boot from

Answer 2

Team dd if=/dev/zero of=/dev/mydisc bs=512k. Replace mydisk with the names of your devices. Don't thank.
To read https://habr.com/en/post/117050/

Answer 3

If both disks are detected normally, then everything is as usual: you write the installation image to the media, start booting from it, format everything, install it.