SigintOS Live USB on Lenovo Desktop

Download from https://www.sigintos.com/download/
Using Rufus Portable https://rufus.ie/en/, create a bootable USB with persistance

Access Lenovo desktop BIOS by hitting F12 while booting.
Disable Secure Boot, disable CSM, change Boot Priority from Legacy to UEFI
Plug in SigintOS USB and boot while hitting F2 or F12 to point to USB drive

Turn on Lenovo Tower while holding F12

Enable CSM

Boot Priority Legacy

Save and Exit while holding F12

Select the SigintOS USB as the boot device

While in SigintOS live, go to Settings | Keyboard | Text Entry. Remove Turkey and keep English

Dual boot SigintOS

Disk Management on Windows desktop: Shrink C to create a D: Linux exFat partition.
Right click on C: and D: to access Properties. Turn on "Shared" for each partition.
Turn off Windows and plug in SigintOS USB.
Turn on Windows machine while hitting F12 to point to USB boot.
While in live SigintOS, search "install"
Select option to "Install SigintOS alongside Windows"
Click on "advanced partitioning tool"
Highlight the free Linux partition, format as ext4, reduce size by 4000 and specify / mount point.
Highlight the remaining 4000 MB, format as swap.
Install

Damn, installer crashed.

Sticking with the live USB flashed as DD image and no persistant storage