Solve : How to Mark a partition ACTIVE from dos??

1.	Solve : How to Mark a partition ACTIVE from dos??
Answer» windows 7 was WORKING properly but now has an error MRB Missing. I used the original disk to attempt repair of MRB but have failed. I am pretty sure hat I marked a new partition that I created as "ACTIVE" or "primary" I am now in dos and can see in DISKPART DIR a command which says ACTIVE. Is there a way to check which PARTION is active? And what is the remedy if his is the problem?Additional options or STEPS here - > HTTP://support.microsoft.com/kb/927392

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