Windows 10: Is Dual Boot still allowed on a single PC with a digital license?

I have a single PC that I dual boot into two Win10 installations: one for work, one for gaming. Both installations use the same retail digital license. I got hit by a Windows activation bug where a BIOS upgrade resulted in both installations losing activation because Windows thought I changed the hardware. I was able to recover activation for the work installation. But for the gaming installation, standard procedures don't work. All I get is:... the digital license for this device has already been used to reactivate Windows.So what's going on?First basic question: Is dual boot still allowed on

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Single machine, single Win 10 license, but dual boot: does the license allow this?

I have a single computer and single full (non-OEM) Windows 10 license. However I would like to boot this single machine in two different configurations: one for home use, with normal productivity software; the other with only music production software (so it runs fast and efficiently).

Because it would be dual boot, it would only ever be running in one boot image or the other, not both simultaneously.

So does the Win 10 full license allow me to legally create a second boot drive for the same computer, using the same license, so I can boot the same machine in two different configurations?

 

Dual Booting with Windows 8.1


The procedure below will allow you to boot Windows separately or in dual boot configuration.
Here's what I recommend to do:

1. Disconnect the drive containing Windows 8.1
2. Install Windows 10 with one drive connected.
3. After step 2, reconnect the drive containing Windows 8.1
4. Boot up Windows 8.1. Open disk management and take a note of the drive letter of Windows 10 OS.
   NOTE: if you boot up Windows 10, then take a note of Windows 8.1 drive letter
5. Open Admin command prompt and type: bcdboot X:\windows where X: is the drive letter of Windows 10 (Windows 8.1 if you boot from Windows 10 in step 4)
6. Reboot the PC. You should have a dual boot screen.

NOTE: To break off the dual boot setting, Win+R->msconfig->boot and delete the none default entry on the list.

 

Dual boots from a single physical drive

One of the two identical ids has changed to W8.1. So the one not changed allows directly booting into W10. Thank you so very much for your continued follow-ups to this happy ending. Than you again.