Hello
I am student and I never used Linux so long, so you can consider me beginner.
I had to download manjaro along with Windows 10 and since I don't have enough memory on my C drive where the system is installed, I tried to create partition on D drive and after tried to install manjaro and when the installation was at the end, it gave me error and I had to restart the laptop. After that I wanted to check the D drive and I tried to open it and it told me access denied. And the drive was full. I went to the disc management and tried to delete the partition I couldn't and there is no option to extend D any more and at the same time I can't have access to the drive in windows and I can't delete the partition so Linux is still there but not working.
What I could do in this situation.
Thank you so much. And sorry if my language isn't so good

What error did you get? Without knowing that, it's hard to know where to start. You haven't given nearly enough information to allow anyone to give you much help.

If I was in this place, I would be looking at using a Live distro / rescue utility to view and/or manage the partitions.

GParted Live....
https://gparted.org/

Rescuezilla is a nice compact Live Linux graphical distro environment that can help with backup, restore, and recovery of your HDD partitions...
https://rescuezilla.com/

Windows doesn't give drive letters to Linux partitions so if it labelled as "D" in windows, it has a windows filesystem and installing Linux there won't work. Are you selecting the option to run ad administrator when you try to delete the partition? I'm not sure why you would not be able to delete it then.

When you say the drive was full, do you mean what you refer to as "D". That would be a partition on the drive. Windows users often use the term drive when referring to a partition.

If you have windows 10, it is likely to be a UEFI install so Manjaro needs to be installed UEFI also. If you can boot the Manjaro install DVD/USB, do that and open a terminal and run this command with root/admin privileges and post the output here:

Might be a good idea to read up on dual booting Manjaro with windows 10, see the link below at the Manjaro forums.

Actually I have ssd with Windows 10 on it, and after all I could download manjaro well after I choose erase disk and it is installed on the D wich is Hdd.
But now my laptop always boot to Windows unless I pressed F12 and when I boot to manjaro it is done but slower than Windows. Any way to make Linux is the main system to boot into.
And I tried to use easybcd but it can't work because UEFI mode

You might be able to use eifbootmgr run as root user. Take a look at the link below, ignore the Ubuntu specific information.

https://www.linuxbabe.com/command-li...otmgr-examples

If you can't do that, when you boot the computer access your BIOS firmware on boot. You should see a message onscreen telling you which key to use to access and then look for boot options.