How to restore Windows 10 boot?

Question

linux

I'll start from the very beginning of this mess, so there are no questions. I don't remember all my actions. I say right away that this is my first solid experience with Linux, and not like at school in the classroom. And I'll forgive the water, but it's here to fully understand the picture, what am I ...
My setup:
i5 2310
4 Gb ddr3
GIGABYTE GA-Z68MA-D2H-B3
Nvidia Geforce GTX550 Ti
Segeate at 250 Gb
WD at 1 Tb
Priority is to download Segeate
I’m sitting on Windows 10 and then I wanted to reinstall it and save it to my second Segeate 250 Gb Ubuntu disk so that there was nothing to play there and I coded in Python (I know it so-so, I would like a mentor). First I installed Win on WD 1 Tb, then I made a bootable flash drive and installed Ubuntu on Segeate. Everything was going smoothly until Ubuntu started freezing tightly. I decided to demolish it (by installing another distribution on the same disk). I installed Lubuntu amd. I didn’t like it, I decided to install Debian, downloaded a smaller image, I thought, let it download what it needs during the installation via an Internet. It didn’t reach its full installation and testing, that is, I walked away during the installation, walked away, asked the parish to choose DE, well, I chose Cinamon. He shook something for a long time. Well, like he installed, he asks to reboot, I reboot - it does not work. And even then I started having problems loading into Windows. Fortunately, I had a bootable flash drive with Lubuntu i386, I wanted it at our school on computers in cab. computer science (I'm not a teacher, but a student, and I communicate well with the teacher, so I help him clean and collect computers). So, I installed it, I reboot the computer, I enter it - it works. Once again I reboot, I boot into Windows, it seems normal. I come home from school and suddenly Windows disappears from the OS boot selection. And after 1 hour of googling, I found out what grub is. It turns out that was the bullshit with which I chose the OS to boot from the very beginning. Having tried everything in different ways, without touching the terminal, nothing comes out. I'm trying to make a bootable Win. Does not exceed. Downloaded from off. site, made a bootable flash drive, I boot from it a purple screen and a cursor, waited 10 minutes and scored on this option. I managed to make a normal bootable USB flash drive with Ubuntu amd64. Installed without any problems.
With her I tried to make a download. flash drive Win - does not work. Then I saw how people "repair" grub with boot-repair, tried straight from Ubuntu, not liveCD, as recommended (yes, I know who I am after that). Later with liveCD. Installed via terminal:
sudo apt-get-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair
Followed the instructions, like: write blah blah to the terminal. And then such a hat came out:
rus-linux.net/images/boot/boot-repair/105.png
Just as you understand, I had 2 dsika, which means 2 main points. At first I thought, where is the red dot there and we will repair grub, later it dawned on me that with the help of space you mark devices for configuring grub, I tried everything in different ways. Does not help. I tried ONLY the first method of this form:
https://youtu.be/TlSo8mZ6f-M?t=4m13s I
just chose the disk with Win, where the chroot went, it started to give an error. I noticed something strange in the command log:
Partition 2 does not start on physical sector boundary.
Disk /dev/sdb: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors out of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk Label Type: dos
Disk ID: 0xdefbc949 Device
Boot Start End Sectors Size Id Type
/dev/sdb1 * 2048 1953521663 1953519616 931.5G 7 HPFS/NTFS/exFAT
I think this has something to do with my problem. Well, that's all I tried to do. Kind people HELP please. I have a tough deadline. The PC is at home, and my mother is having some kind of event, she will urgently need a computer in a couple of hours, and she needs Win, on Lin there is at least no firewood for the printer. But it's good to have a friend. He will give his PC for 1 evening and the next morning. I will of course make a bootable Win stick from his PC if need be. But I would like to save documents in Win. That is, as I looked through Ubuntu, everything is in place, the system should work, but it cannot be loaded.
A big request to write to solve this problem in PM VK: vk.com/mempron
All the necessary command logs, of course, I'll throw them off.
PS: Sorry for so much water, but that's just so you get the full picture. I understand that this is all because of my curvature, and not me because of Linux.

Answer 1

You turn off the 250GB screw so that it does not mislead you. You make a bootable flash drive with Win10 and restore the Windows bootloader, not grub. Then you hook the second screw back and do a clean install of linux on it.