Carlos E.R. wrote:
On 2018-07-11 04:24, Paul wrote:
[...]
Windows To Go is it.

Can't.

The procedure is designed to move existing and booting Windows on an
internal disk to another disk outside. I do not have two disks, I only
have one. And it doesn't boot, so I can not run anything on it. Can't
install any software, unless using some rescue USB stick.

I removed the disk from inside and connected it outside.

If you're willing to - temporarily - swap the disks back, or you can
temporarily use some other Windows system, you could download the
Windows 10 software and make bootable USB memory-stick or DVD Windows 10
Install media.

'Download Windows 10'
https://www.microsoft.com/en-us/software-download/windows10