Windows 10: Multiple different OS on removable disks on a computer

I have just installed Win 10 Pro 64 bits onto a removable disk which slides into a sata caddy on a new machine. I understand that in some way Microsoft knows that the OS has been used and will not allow the key to used on another machine. I don't know if this is recorded inside the PC or somewhere else that stores Microsofts' data.

I now wish to install Win XP onto another removable disk to run old programs that I haven't been able to get to work in Win 10 Pro 64 or 32 bit systems. This disk would never have internet connection. I am also playing wirh Ubuntu and that will be on another disk so 3 disks in all. This worked with no problem in an older machine.

Could what I propose have any impact on the original OS or would they all be recognised and work independently of each other and with no impact on bios or motherboard.

Hoping somebody can help..............thanks

:)

 

Remove spare hard disk as system disk

I have SSD which is my main drive (OS installed) and listed as system disk and I also have another HDD which is my storage but also listed as a system disk. My question is how do I remove the hard disk as a system disk? By removing and keeping as system
disks make a difference?

 

copy from removable disk to computer

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Can't safely remove external disk

In reference to the steps of your suggestions:

• The issue is specific to the particular disk and it started after I've used the disk to save the System image backup (created with the Control Panel > File History tool).
• I didn't disable any windows Service. I'm just wondering if there is any to disable.
• Safe boot with networking, or clean boot doesn't resolve the issue.

Thank you.