How to boot with win10 hard drive

[Mridulgames]

I have 2 hard drives mounted on my PC one have win 8.1 and the other have win10 and I want to boot my PC with win10 hard drive instead of win 8.1.but when I start my PC and select the boot option to win10 hard drive but it gives an error that "an operating system was not found .try disconnecting any drives that don't contain an operating system press ctrl+alt+del to restart
My HDD containing win 10 is a laptop hard drive
Plz help thanx

 

[D_Know_WD]

Hi there Mridulgames,

Have you even managed to boot from that drive before?
Was the OS installed on that computer? I see that it is a laptop HDD. Was the OS installed on a laptop? If this is the case, then I would say that this is the reason your computer will not boot. You will need to reinstall Win 10, while the HDD is attached to your PC.

Let me know in case you have some more questions,
D_Know_WD

 

[LukeFatwalker]

Sounds like you didn't install it properly, try installing the OS again. Also, are you using Windows To Go?

 

[Mridulgames]

yes i managed to boot from that hdd when it was mounted on my laptop