Reboot and select proper boot device

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ZeAzlan

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Hello everyone

I removed my old secondary HDD from my PC and replaced it with a new one but now for some reason I get an error (in the title) and not sure how to fix it.

The PC worked perfectly before I swapped the old HDD out so I doubt its an OS issue. I'm running Windows 10.

I did go into the BIOS and the SSD which I have windows on does show up as being connected and I've checked the boot order (not sure what to check here, I did make the SSD the priority HDD of the two but left the rest of the options as is they all say UEFI and that seems important).

Anyone know what I can do to fix it?
 
I don't get that option.

When I connect the old HDD it gives me the option but not when I disconnect it. There is nothing on the old HDD though..

Is there some sort of partition on the old HDD or something that would affect windows?
 
ZeAzlan said:
I don't get that option.

When I connect the old HDD it gives me the option but not when I disconnect it. There is nothing on the old HDD though..

Is there some sort of partition on the old HDD or something that would affect windows?
Click to expand...

Is secure boot enabled?
 
The MBR might be on the second disk. If it is you will need to recreate it after replacing the secondary.

You can use testdisk to both look at and create the MBR .

Obviously make backups before playing around with TD.
 
Secure boot isn't enabled it seems..

Never played around with MBR but will make backups and have a look, I feel like this may be the issue.
 
If i go into disk management both the old drive and the SSD with windows say the partition style is GUID Partition Table (GPT) and not MBR..

What should I do? Should I still make backups of the drives and then try and move the MBR/GPT onto the SSD?
 
Testdisk can fix the GPT but on second thought have you put a windows disk in there and tried to run the startup repair?

That may be the easiest fix Don't use a usb stick though that sometimes does not work. Use a disk.
 
What mobo is it?

Disable all other disks from the boot priority list and only enable the one with Windows on it.

Pics help, a lot.
 
So let me get this right:

-You replaced your "steam" harddrive yet windows is on your SSD but it fails to boot when the new steam drive is connected.


What happens if you only connect the SSD?


Hold up...I see the issue. look on your steam drive it has a partition named "EFI System Partition" That is whats causing the issue.
 
Last edited:
Yes 'Steam' Drive: F is the old drive I want to replace. Windows only boots to login if it is connected.

If i only connect SSD I get the Reboot and select proper boot device error.

Okay what do I need to do with that partition? Can I move it to the new drive or my C drive (SSD with windows on)? Not sure how to do that..
 
ZeAzlan said:
Yes 'Steam' Drive: F is the old drive I want to replace. Windows only boots to login if it is connected.

If i only connect SSD I get the Reboot and select proper boot device error.

Okay what do I need to do with that partition? Can I move it to the new drive or my C drive (SSD with windows on)? Not sure how to do that..
Click to expand...

My recommendation would be to format both drives and start fresh. (delete all partitions so that the steam drive only has one fat partition and all on the OS drive so that only 2 can be made)

Or you can try http://www.easyuefi.com/index-us.html

They say you can move the ESP (EFI System Partition) to another drive, but i think it could be risky.
 
Thanks for the help guys.

Just going to do a clean install of windows.. What a ballache :/
 
ZeAzlan said:
Thanks for the help guys.

Just going to do a clean install of windows.. What a ballache :/
Click to expand...
Make sure only the drive you're going to boot from is connected during the install. Windows creates a boot record on the secondary drive & that is what causes a problem when you replace the secondary drive.
 
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