How to install restore Windows 10 from Ubuntu?

Question

Windows

upd:
I installed ubuntu on the whole disk, how to restore windows 10?

Answer 1

GOOGLE!
This is probably the first question that arises in "decided to try linux". And the first skill that is necessary in linux.
I give a hint - grub

Answer 2

See how you installed. If the HDD was completely demolished and Ubuntu was installed on top of Windows, then nothing.
If you created a new partition and installed Ubuntu next to Windows. Then, when installing Ubuntu, they overwrote the Windows boot manager to Ubuntu.
The bootloader is the thing that launches the OS when the PC starts up. It is different for every system. But there is a common bootloader called GRUB. That's what you need to install . And now, every time you start the PC, there will be options for booting the system, that is, you yourself will choose which system to start.

Answer 3

grub customizer.
Simple and good solution.
If the problem is only with the bootloader, then it will help.