Drives wont boot seperately, what the heck?

Roybromwell · Jul 17, 2017

Hello Everyone,

I have 3 small drives (hand-me-downs) in my PC, all of which have Windows 8.1 and 10; and while they all can boot into their own version of Win just fine, they can only do so when they are all together. When separated, all but 1 fail to boot.

What is this and is there any way to fix it? Any information you can provide would be a true blessing.

elbert · Jul 17, 2017

This should explain how to add a boot menu to make them all work together.
http://www.techadvisor.co.uk/how-to/windows/how-dual-boot-windows-7-or-8-with-windows-10-3633084/

Roybromwell · Jul 17, 2017

Roybromwell · Jul 17, 2017

elbert :

Sorry if I wasn't clear.

All the drives DO boot together. When they are all plugged into the case, I am prompted to select an OS when I power on my PC. It's when they are apart. When I put 2 of the 3 drives in separate cases, they do not boot.

elbert · Jul 17, 2017

Not sure its possible to set them up to boot both together and apart. You may need a USB with Grub to do that.

ko888 · Jul 17, 2017

Roybromwell :

That's because boot manager is missing from each of those two drives that are failing to boot.

You need to add boot manager on each of those two drives if you want to be able to boot independently of any of the other drives connected.

https://support.microsoft.com/en-ca/help/2622803/bootmgr-is-missing-press-ctrl-alt-del-to-restart-error-when-you-start

Roybromwell · Jul 18, 2017

Thanks for your help.

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