Windows 10 thinks it's a USB install

Question

At my work I used my hard drive with a sata to usb device to see if a computer would even boot, it did

but now because of that Windows 10 believes it's a usb install and I've been having more hangs and other things.

now Windows sees an update, but won't take it because it's on a usb, even though it's only been booted on that computer once, and has always been in my computer other-wise.

Please if anyone knows how to make it think it's a normal HDD install again, please tell me

Answer 1

This was also an issue in Windows 8(.1). There you can fix it by opening a cmd.exe as admin, run this command

reg add HKLM\SYSTEM\CurrentControlSet\Control /v PortableOperatingSystem /t REG_DWORD /d 0

an reboot.

Windows uses this PortableOperatingSystem key to detect if you use a regular or WindowsToGo version.