windows 10 IoT enterprise in virtualbox 6 (ver 6.1.16)

This took me a couple tries to get windows 10 IoT to work under virtualbox, and it is very easy.
END result:

steps:
1. download windows 10 IoT enterprise from microsoft.
evaluation copy of Windows 10 IoT Enterprise here.

Direct link: 19042.508.200927-1902.20h2_release_svc_refresh_CLIENTENTERPRISEEVAL_OEMRET_x64FRE_en-us.iso

At the time of this writing, the file downloaded was: 19042.508.200927-1902.20h2_release_svc_refresh_CLIENTENTERPRISEEVAL_OEMRET_x64FRE_en-us.iso

2. run virtualbox, Create new machine:

 -Memory, 2GB

-Disk, 30GB

3.Settings:
-change the boot order as shown:

-storage
select the evaluation ISO from microsoft

-Audio,
DISABLE (we'll enable after installation)

-Network
DISABLE (we'll enable after installation)

-Everything else, I just left default.

4. take a snapshot before installation.

5. boot up and install windows as usual. 

Select Next, then 'install windows' then next again

 Custom: Install windows only

Select the drive/NEXT

installing...

Set your keyboard, etc.

I don't have internet

Continue with Limited setup.

set your username, passwd and security questions.

select NO

 DECLINE 

No for everything here. Then Accept.

Cortana: Not now

 
windows IoT will auto login:

windows start button/ power/ Shut down.

Take another Virtualbox Snapshot

Turn on audio.

Turn on Networking, leave "Cable Connected" unchecked!

Start up

Disconnect ISO:

Connect the network adapter

NO

Wait, and wait...

SKIP for now.

Create a desktop cmd.exe icon,s
right click and 'run as administrator'
slmgr /rearm

Finally, a 90 day evaluation of Windows 10 IoT:

Go ahead and install virtualbox additions...