Windows 10: ssd marked accidentally as active

With mistake i accidentally marked one of the ssd's as active and now i can't use it for anything.
it wont delete it wont format i have no options in disk management for it.

when i press erase it says that "Windows can't erase the active system partition on this disk"

says the same thing when i try to format from "my computer".

i know that only the OS drive should be marked active and i want do to something about it. cause i need the ssd...

:)

 

Windows 10 unable to boot from new cloned SSD

I suspect that your SSD System partition (currently drive D is not marked as "active".

 

Windows 10 not installing on Samsung 850 SSD

This may be where the other fix comes in to mark partition Active. Is this UEFI BIOS that doesn't use Active flags? If not then try preparing drive as shown in Step 2 or 3 here which both Cleans marks partition Active:

SSD / HDD : Optimize for Windows Reinstallation

I would use Clean command instead of Clean All since it is shorter and contains all therapeutic value for installation failures of wiping the boot code and partition table.

 

Normally you use diskpart command to mark it "Inactive". However, you have to be sure it's not the partition Windows boot from. Show us the screen shot of Disk Management then we can help you.

 

i just reinstalled Windows 10 since somehow after accidentally marking the other disk as active and then after a reboot of the computer made sure that boot\bcd didnt exist.

using the "repair the computer" just restarted the computer.

and it just deleted the OS. i checked in diskpart using the Windows 10 dvd to "repair my computer" and entering cmd. the only partition i have now is the one newly installed Windows 10. so i can't do anything from there.

 

i managed to mark it inactive. but can't format it or delete it.

do you think i might be able to use easybcd to fix this since the disk i'm trying to format has the system flag still on it so that it wont get formatted...

 

and now i restarted did nothing to anything just a simple restart it booted from the dvd again telling me to install windows 10 again.
i went straight into "repair my computer" and cmd line option. and now formatting the drive i dont want as system..

on a laptop now.