Update: SSD throwing "Reboot and Select Proper Boot Device" error

[brooke.cowley]

Ancient Dell machine, currently running Win10 with legacy BIOS. Bought a new SSD to eke out some performance, hooked it up, cloned my current C drive with EaseUS, restarted, set the new (MBR) drive as boot,got the above error. Booted again on the old drive to see what was happening in Windows, and the ssd looks otherwise fine: files accessible, drive tagged Healthy (System, Active, Primary Partition) in disk management. Attempting to manually select the new drive as boot on startup seems to simply ignore the selection: the old C drive boots instead and the ssd gets kicked to A:.

Will still gladly take any advice, but unlike the original post, at least this new error has plenty of existing Q&A fodder to start digging through.

 

[Davil]

Motherboard might be too old to recognize it, you could try a BIOS update.

 

[brooke.cowley]

Motherboard might be too old to recognize it, you could try a BIOS update.

Updated, no change. Thanks for the stab at it, though!

 

[karenjoly]

What happens when booting with only the new disk installed ?

 

[brooke.cowley]

What happens when booting with only the new disk installed ?

Same error as above- "reboot and select proper boot device".

 

[karenjoly]

The obvious problem is with the clone.
If there are no other options at hand, I would use Macrium Reflect and clone the old disk again. There is a free version and the following sets out how it's done.
https://knowledgebase.macrium.com/display/KNOW/Cloning+a+disk

If that doesn't help then the fallback is to install windows on the ssd ensuring that the old drive is disconnected during the process and that the ssd is partitioned with a MBR.