Windows 10: Change drive from where the OS Boots up

I have 3 drives C: ,D: , E: . Drive D: is on a external bay. Where I look at Disk Management I see for see ( Boot, Page File, Crash Dump, Primary Partition) on the Disk, Drive D: (System, Active, Primary Partition), E: (Primary Partition) . If I remove D: the system doesn't boot up because it says it can't find the OS, which it is installed on C: . I wonder if there is anything I can do to have the system running from C: otherwise I can't remove D: ever.

submitted by /u/jonny80
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:)

 

Hard drive/ OS issue

a guy suggested :

• shutdown
• unhooked HDD
• restarted
• yay !!
• reconnected HDD
• restarted
• yay !!

also , try method 3
How do I unlock the drive where Windows 10 is installed?

 

Wondering about a second hard drive and installing Vista on it and also a ..

iv'e had too many problems to list like that, thats why i suggested disconnecting the original drive(s) and using the BIOS to choose what drive to boot from.

 

How do I change the OS?

Hi Jim,

Thank you for posting your query in Microsoft Community.

We would be glad to help you with the issue you are facing today. I understand the difficulty with the problem.

I would suggest you to check in the system configuration if the OS is detected.

Follow the steps to check.

• Type in the search bar “System configuration”.
• Click on the boot option.

Check if the OS is detected in the boot option.

Please provide us with the above information to help you better.

Thank you.