Boot from mSATA

[CompuWiser]

Hi there,

I installed 128GB mSATA on my HP Envy 15t-j100 laptop.

I formated both the HDD and the new mSATA, and installed Windows 10 Home freshly on the new mSATA.

Everything went fine, till the system restarted. That's where I got a black screen with a massage:

Boot device not found

Please install an operating system on your hard disk

What shall i do?

I tried to disconnect the HDD, then the system booted properly to Windows 10. But I got that black screen again whenever the device boots with the HDD connected.

[WAWood]

@CompuWiser 

From your description, it sounds like that when you have both drives connected, the system tries to boot from the HDD, not the SSD.

To change that, you have to go into your UEFI settings and modify those to have the PC boot from the SSD.

[CompuWiser]

There is no option to select disk priority in BIOS settings

[WAWood]

@CompuWiser 

On PCs that come with two drives, the mSATA drive is normally configured as "drive zero" and the HDD as "drive 1".

That is to force the PC to boot from the mSATA drive by default -- because that is where the OS has been preloaded.

But that is only the case where the mSATA drive connects directly to a port on the motherboard.

If your is connecting via a cable, then it might not be "drive 0" -- and the only way I know to change that, since the mSATA connector is different from the HDD connector, is in the UEFI/BIOS settings.