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Windows 7: Disc Management problem

28 Apr 2014   #1
Novel8

Win 7 x64
 
 
Disc Management problem

Never attempted to use this win 7 feature until I just done my first build and installed Win 7. I have a 500 gb sata HD with just my C drive. Recently I wanted to add a partition for just my photos and etc and some small programs that I seldom use. Stupid me, I created a 100 MB partition. I think I know how to increase that partition, but upon looking at my system in DM, I saw another 100 MB Partition? in front of my C drive. The one I created came after my C drive. I didn't know or even noticed that part before, so I don't know if it was always there or I made a mistake somehow. I tried to delete it, but delete is greyed out. BTW, the info in that section says:System Reserve 100 MB NTSF Healthy ( System Active Primary Partition ) and the one I created says Unallocated....100 MB. Do I need that partition? If so, what is its purpose?


My System SpecsSystem Spec
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28 Apr 2014   #2
derekimo

Microsoft Community Contributor Award Recipient

 
 

You don't want to mess with that system reserved partition, that is what is booting your computer, (The System and Active labels on that).

The reason it isn't seen in Explorer is the lack of a drive letter, that is done on purpose to keep it hidden, except in disk management.

Here is a tutorial for posting a screenshot of your disk management, that will help with further advice,

Disk Management - Post a Screen Capture Image

You might already be familiar with these,

Partition or Volume - Shrink

Partition or Volume - Create New

I recommend posting back and asking questions before doing anything further.
My System SpecsSystem Spec
28 Apr 2014   #3
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

My System SpecsSystem Spec
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28 Apr 2014   #4
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Right, a screenshot of your disk management would be helpful. There are a lot of traps you can fall into with disk management.

E.g you cannot have more than 4 primary partitions or more than 3 primary partitions and 1 extended partition. But then you can have a lot of logical partitions (up to 120) that are created under the umbrella of the extended partition. If you violate those rules, you get dynamic partitions and those are a bitch and very hard to work with.

In fact the only primary partition you need is the one that contains the bootmgr (the active partition). All other partitions can be logical partitions - even the C partition if you have an active 100MB system partition (or another partition that is active). Unfortunately the OEMs have made it a (bad) habit to make every partition a primary. Then the uninitiated user is stuck and does not know what to do when he wants an additional partition.

Disk Management is very hard to work with (e.g. for shrinking large bits). It is better to use Partition Wizard home edition. And here is their tutorial section with a video tutorial for any possible operation. If you want to make any operation on the C partition, you need to use the bootable CD of Partition Wizard.

And very important: Image your system before you manipulate partitions. It is easy to lose a partition when you make a minor mistake - has happened to me too, LOL.
My System SpecsSystem Spec
29 Apr 2014   #5
Novel8

Win 7 x64
 
 

Quote   Quote: Originally Posted by derekimo View Post
You don't want to mess with that system reserved partition, that is what is booting your computer, (The System and Active labels on that).

The reason it isn't seen in Explorer is the lack of a drive letter, that is done on purpose to keep it hidden, except in disk management.

Here is a tutorial for posting a screenshot of your disk management, that will help with further advice,

Disk Management - Post a Screen Capture Image

You might already be familiar with these,

Partition or Volume - Shrink

Partition or Volume - Create New

I recommend posting back and asking questions before doing anything further.
here is a picture of my Disk Manager what threw me is that the reserve and the created unallocated are 100 MB's....is this a coincidence?


Attached Images
Disc Management problem-partition.png 
My System SpecsSystem Spec
29 Apr 2014   #6
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Pure coincidence. but don't touch the system reserved partition.
My System SpecsSystem Spec
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