Ubuntu 18.04.3-LTS installation alongside Windows 10 cannot detect Windows 10

While attempting Ubuntu installation from an USB image, I get stuck because Ubuntu cannot detect my Windows installation.

My system specs are as follows:

1) Desktop with Intel 64 bit Family Core(TM) i3-4150 CPU @3.50GHz   2) Two MBR partition of hard disk with 100 GB and 500 GB free space, besides a small system reserved partition.  

I have already done the following, mainly following from solutions in How do I install Ubuntu alongside a pre-installed Windows with UEFI?

1) Disabled Hibernate and fast boot. "powercfg /a" says only Standby (S3) available. Further I shutdown with -f -t 0 option 2) checked that Confirm-SecureBootUEFI gives cmdlet error, implying system does not support Secure Boot. 3) enabled legacy only as well as legacy first in the Boot options.  

Regards

is there any performance issue if we install ubuntu on windows based laptops?

i mean that if we have a windows based laptop then if i install ubuntu on this laptop will it work fine or there will be some performance issue because there are other types of laptop too in the market which are ubuntu based so what is the difference between these two types of laptops.

i wish to install ubuntu on Acer predator helios 300 with i5 processor and 8GB of RAM 128 GB SSD 1TB HDD.

Joining Ubuntu core to Windows active directory

I have been trying to join some devices running Ubuntu core to the corporate active directory. We could get any standard procedures that worked. We tried the Ubuntu methods, but unable to do as the packages don’t install correctly in Ubuntu core.

Can anyone help on how to join Ubuntu core to windows AD domain controller

Note: I am quite new to the subject.

Thanks in advance

How to enable concurrent users, one RDP and one local, in post exploitation in windows without disk modification?

I want to do this by just using memory and not using disk modification or a tool, in post exploitation of a remote system, i already know how to enable RDP but the problem is when a user is logged in i cannot log in

there is a method :

https://www.mysysadmintips.com/windows/clients/545-multiple-rdp-remote-desktop-sessions-in-windows-10

and i thought i can do it in memory and patch that instruction inside memory instead of disk, but found out SVCHOST processes have SYSTEM integrity and so i cannot inject into them and modify them

so how can this be done? any other way that i can do this without using any tool or disk modification?

tried installing ubuntu over a corrupt install of windows 7, can’t boot into ubuntu

I wanted to try linux, so I installed Linux Mint over Windows 7 on my laptop. After a while I decided to go back and tried to remove Linux Mint and install Windows 7 again but something went wrong. I couldn’t boot into Windows 7 even though it was there. Then I tried installing Ubuntu in the hopes of an easier way to install Windows 7 again but now I can’t boot into Ubuntu because it keeps bringing up the Windows Boot Manager on boot with 2 seperate instances of Windows 7 to choose from even though I don’t have Windows on this computer. The install option of ubuntu that I chose was erase disk and install thinking that it could give me a clean slate to work in. Anyone got any ideas?

Cannot boot to windows 10 m2 after installing linux on separate ssd

My windows 10 is installed on m2 ssd (UEFI). Today i have installed ubuntu on separate sata ssd (UEFI). Now i cannot boot windows 10 from boot options list. If i choose m2 from list there is a message Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key Is there a way to boot windows 10? Thanks!