Why can't DISKPART see the hard disk volume, but it can see the disk itself?

Question

Command line

The problem is actually what, I installed win7 as the second system, the first was Linux, however, during installation, it seems that I didn’t look after it, it formatted the hard drive, then win7 was installed, but without a single driver, well, I take it, I put Linux on the entire hard drive, accordingly, there is no Windows, further in my stupidity, I realized that I could not install Windu, because of the ext4 file system, we move on, I decided to try changing the file system, and I even forgot which utility I changed, and now what is the actual problem, Linux does not start, no Windows (7,8,10) is installed, going into recovery instead of installing wine 8, I opened kmd, then I go to the Internet for guides, I understand ± what I need to do, and on those, I only see a flash drive, but the disk itself sees, then, I can’t do anything with the disk, it shows, they say, it’s full, and I also noticed something, in fact, you can see in the photo,that the offset of partitions on the HDD under sort of like swapping is identical to the size of the main partition, 930GB, for some reason the photo is not loaded

Answer 1

If you want to make 2 systems on your computer, then it's better to put Windows first. I don’t know how it is now, but before Windows didn’t even try to detect other installed OSes.
Install Windows whichever you like best (Win10 is better). During the installation, just clean the disk, there will be an option at the step of selecting a partition to install. Create a partition for Windows manually of the desired size (<100 GB system disk is not worth doing). Leave unallocated disk space for installing Linux.
When installing Linux, put it in the unallocated area of ​​the disk. Ubuntu correctly detects the previously installed Windows, installed by the second system without any problems.
Divide the disk between systems according to your needs, depending on what you plan to do in them.
Windows partitions under Ubuntu Windows out of the box are readable and writable. From Windows, Linux partitions are not visible by default. I did not come across a free, normally working software under Win10 for accessing Linux partitions. There are paid options.