I had taken the SSD out of my HP Z420 PC cause I am selling the PC. The SSD has Windows 10 home on it. I had an ADATA hard drive enclosure, so I put the SSD in it and just for the heck of it, I wanted to see if it would boot. It did and is running pretty fast even though its connected by USB. The computer is an HPZ210 with 32GB RAM. So I have been running checks on it and it seems to be working very well. When I boot the computer, I press F9 a few times till boot menu pops up....it shows the ADATA as a choice. When I choose it, I see "Attempting to boot from USB....." in upper left of screen. It takes slightly a little longer to boot compared to when it was in the Z420 PC.
I had read many times that Windows could NOT be booted from an external drive.
I had read many times that Windows could NOT be booted from an external drive.