Select the downloaded Build 21390 ISO, choose the appropriate partition scheme ( for modern UEFI systems or MBR for older BIOS systems), and click Start . Phase 2: Configure System BIOS/UEFI Restart the target computer.
Select the from the drop-down menu.
Here are some of the key features and changes in build 21390: windows 10 insider preview build 21390 x86 x64 iso incl
Understanding Windows 10 Insider Preview Build 21390 (x86/x64 ISO) Select the downloaded Build 21390 ISO, choose the