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Windows 7: Partition - Mark as Active

16 Mar 2010   #9
Jonathan_King

Windows 7 Professional x64
 
 
Partition - Mark as Active

How to Mark a Partition as Active in Windows 7

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My System SpecsSystem Spec
10 Apr 2012   #10
oxymoron02

Windows 7 Ultimate 64-bit
 
 

Unfortunately this doesn't work for me. I get the good ol' greyed out problem here.

Partition - Mark as Active-image3.png

Brief question because I don't have time to do it now (I'm already late for work! )
If I were to set the partition to primary and reboot (that's the part I don't have time for), would it then allow me to make the partition active once Windows restarted?



My System SpecsSystem Spec
10 Apr 2012   #11
Jonathan_King

Windows 7 Professional x64
 
 

Yes, you should be able to mark the partition as Active after you set it to primary. The one thing I am unclear on is whether or not you'll be able to do that to the main boot drive from Windows. Someone who does more of this kind of work than I do should be able to tell you, but all I can say is if it doesn't let you, boot into the recovery console and run the Diskpart commands.
My System SpecsSystem Spec
10 Apr 2012   #12
oxymoron02

Windows 7 Ultimate 64-bit
 
 

I have now successfully rendered the Windows 7 partition as primary and the WinXP partition as Inactive. However, it still won't let me set the Windows 7 partition to Active, and I'm a little wary of rebooting to see if it will allow this as I have a feeling the machine will become unbootable once Windows shuts down.

It's so typical of my machine, of all the computers in the world, to throw up this kind of problem where so many others have managed to perform the exact same operation without flaw.
My System SpecsSystem Spec
10 Apr 2012   #13
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

Doesn't Windows 7 require the 100MB system reserved partition in order to become the System, Active Primary Partition? I don't see it there in the disk management for C drive.


Attached Images
 
My System SpecsSystem Spec
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10 Apr 2012   #14
oxymoron02

Windows 7 Ultimate 64-bit
 
 

Isn't it that partition called 'System Reserved'?

I also have some astonishing news. After screwing up my boot manager (I became impatient and attempted two steps in one boot), I actually succeeded in rendering Windows 7 as primary and active, and WinXP as logical and inactive, -all using pwhe-, then used the startup recovery three times technique which repaired the boot files to the Windows 7 partition. I've now wiped XP (goodbye, old friend...) and am in the midst of merging partitions using pwhe.

Currently sitting twiddling thumbs on my Android tablet waiting for the next thing to go wrong. And oh look, the Google+ app keeps crashing.
My System SpecsSystem Spec
10 Apr 2012   #15
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

Quote   Quote: Originally Posted by oxymoron02 View Post
Isn't it that partition called 'System Reserved'?

I also have some astonishing news. After screwing up my boot manager (I became impatient and attempted two steps in one boot), I actually succeeded in rendering Windows 7 as primary and active, and WinXP as logical and inactive, -all using pwhe-, then used the startup recovery three times technique which repaired the boot files to the Windows 7 partition. I've now wiped XP (goodbye, old friend...) and am in the midst of merging partitions using pwhe.

Currently sitting twiddling thumbs on my Android tablet waiting for the next thing to go wrong. And oh look, the Google+ app keeps crashing.

Yes it says system reserved and it also says Active, where the actual C drive doesn't say Active and only says Primary Partition. Can you tell if pwhe- added the system reserved partition?

I'm wondering why Windows wouldn't let you do that, hmmm.

As you found out, you can usually fix the boot manager, you can also fix it using the command prompt. bootrec /fixboot and bootrec /fixmbr.

Bootmgr is missing - Fix

Saying goodbye to XP was a welcome sight for me but that was years ago.
My System SpecsSystem Spec
11 Apr 2012   #16
oxymoron02

Windows 7 Ultimate 64-bit
 
 

True enough your actual Win partition should be System Active, as far as I understand it, but I'd cut my losses while I was ahead and just be thankful it's working

I'm genuinely sorry to have gotten rid of XP but I was hanging on to it out of sentimentality . That and because my friend won't make the leap' so when we want to lan it up on Sins of a Solar Empire I had to boot into XP. Well no more!
My System SpecsSystem Spec
24 May 2012   #17
herbun

Windows 7 Professional 64bit
 
 

"Do not mark a partition as active if it doesn't contain the loader for an operating system. Doing so will make your computer unbootable."

How do I know where the boot loader is located at?

Thanks
My System SpecsSystem Spec
24 May 2012   #18
Jonathan_King

Windows 7 Professional x64
 
 

Hello herbun,

I'm sure there are other ways, but open Disk Management ("diskmgmt.msc" into the start menu), and look for the partition labled "System". That's your target.

BTW - the warning up there is valid in most cases, yet there may be times where it is necessary to mark a non-System partition as Active, namely when you're about to create a new boot loader on another partition. Use with care.

Partition - Mark as Active-capture.png


My System SpecsSystem Spec
25 May 2012   #19
herbun

Windows 7 Professional 64bit
 
 

Thanks for your reply. I got a little problem though, there is no partition labeled as "System".

It's in german, however, another german version (win 7 prof) has also a partition called system.

Maybe its the second partition on "Datenträger 0", I can't see whats written there, but it *should* be the same as the status in the table above(as it is on the other german pc), and there I don't find "System" either. See attached image.

Edit:The 7 version I am talking about is home premium btw.


Attached Thumbnails
Partition - Mark as Active-partitions.jpg  
My System SpecsSystem Spec
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 Partition - Mark as Active




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