Mark Partition As Active(Wrong Drive)

Bippster

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Sep 25, 2011
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Hey, I was fiddling around with my recording drive a few days ago and I hit the "Mark Partition as Active" option on my X Drive(recording drive) and now everytime I try and boot up my system it gives me "Missing BootMGR Press ctrl+alt+del to reboot"
Meaning my system is trying to boot from my X drive and not my C drive, easily override it by unplugging my X drive and starting up my system but annoying when I have to do that in the long run.

What can I do?

Specs:
Windows 7
2-1 TB WD Blacks as C and X
 

Bippster

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Sep 25, 2011
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My bios just says Hard drive, doesnt give me an option between either or.
 

quesionboy

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Oct 9, 2011
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the problem is that he just make the wrong partition as active, not the disk Boot Sequence. To solve this problem, you could try the three methods below:

A-the Win PE bootable CD to boot in WINPE,and then reactive your C drive.
B-use other partition software which integrate bootable CD
C- Connected your hard drive to another computer as a slave drive, then reactive your boot partition.
D-If you know how to use Dos Command, you could also reactive your partition in dos mode.
 

Bippster

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Sep 25, 2011
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Never did get a good reply to Ill go feather into the problem.
http://i.imgur.com/hFILK.png

I selected "mark partition as active" on my recording drive. Now when I put up my computer it thinks my recording drive is my main system drive and will error and say "Missing BootMGR Press ctrl+alt+del to reboot" So I have to unplug that drive and reboot and It works.

Ill try to mark partition as active on my main drive (c drive) but its greyed out.

Question: How do I "Unactivate" my E drive and stop it from acting like my primary drive?
 

Bippster

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Sep 25, 2011
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Fixed, if anyone runs into the same problems as I did this is what I did



Hi,



You can use the following steps to de-active a active partition:



1. Open Command Prompt.

2. Type: diskpart

3. At the DISKPART prompt, type: list disk (This command will list all the disks that you have)

4. In the next prompt, type: select disk # ( # means the number of the disk which contain the wrong active partition )

5. At the DISKPART prompt, type: list partition

6. Use the command: select partition # (# means the number of the partition that you want to mark as active)

7. Inactive the active partition with command: inactive



Important Note: We strongly recommend that perform a full backup before this procedure.



By the way, there is a helpful article about disk management, for your reference:
 

GrimTheXReaper

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Sep 26, 2012
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Please help ASAP i done the same thing as you bippster and i can't boot anything it just pops up saying my BootMGN is missing and i don;t know how to open the command propt like you said is there a certin button i need to press? please help