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Windows 7: Ques re 100 MB System partition

08 Aug 2009   #1

Windows 7 Ultimate x64 (Retail)
 
 
Ques re 100 MB System partition

In my reading, I got the impression there is supposed to be a 100 MB system partition installed as part of the Win 7 installation. I don't see this partition on my system even looking at it with Acronis Disk Director.

If I am right that there is supposed to be this system partition, it sounds like it could be a problem down the road that I don't have it. Is there any way to get this partition installed on my system w/o doing a new clean install and, if so, what would be the procedure?


My System SpecsSystem Spec
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08 Aug 2009   #2

 
 

no need for 100mb system partition...
My System SpecsSystem Spec
08 Aug 2009   #3

Windows 7 Professional x64
 
 

Check out this thread. You may have done something like this.....I don't know. It may help.

Install without 100MB partition new drive
My System SpecsSystem Spec
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08 Aug 2009   #4

Windows 7 Pro (MSDN)
 
 

The partition is created if and only if the Windows 7 installer partitions the drive (e.g., if you have it installing into a block of unpartitioned space). If the drive had already been partitioned prior to install and you are installing into an existing partition, the 100MB system partition is not created.

And no, you don't need this partition for general use. You need it if you want to BitLocker-encrypt your main partition (and I think it might also facilitate VHD booting, though I don't remember). For 99% of people, it's not needed, and it's not going to cause any problems down the road if you don't have it (but it doesn't hurt to have it, so that's why the installer creates it by default, if given the opportunity to do so).
My System SpecsSystem Spec
08 Aug 2009   #5

Windows 7 Ultimate x64 (Retail)
 
 

Thanks for the helpful responses. Especially the one quoted below.

Quote   Quote: Originally Posted by DataMan47 View Post
The partition is created if and only if the Windows 7 installer partitions the drive (e.g., if you have it installing into a block of unpartitioned space). If the drive had already been partitioned prior to install and you are installing into an existing partition, the 100MB system partition is not created.

And no, you don't need this partition for general use. You need it if you want to BitLocker-encrypt your main partition (and I think it might also facilitate VHD booting, though I don't remember). For 99% of people, it's not needed, and it's not going to cause any problems down the road if you don't have it (but it doesn't hurt to have it, so that's why the installer creates it by default, if given the opportunity to do so).
My System SpecsSystem Spec
08 Aug 2009   #6

7264x64/7260x86
 
 

You're welcome.
My System SpecsSystem Spec
08 Aug 2009   #7

Windows 7 Professional 64-bit
 
 

If you have an existing partition then the OS wont create that partition. But if you point the installer to a raw unpartitioned drive then itl create the system reserved partition with no drive letter. Its perfectly normal and it doesnt matter if its there or not.

Personally I like things organised so I delete existing partitions so that Windows can create it.

You have a large enough hard drive not to be overly concerned about free space.
My System SpecsSystem Spec
11 Aug 2009   #8

Win 7 RTM 7600 Ultimate 64-bit
 
 

Good info. Was wondering why this partition appeared when I installed onto a brand new un-partitioned disk. I'll leave it be since it's a 500 GB disk and the partition is only 100 MB.
My System SpecsSystem Spec
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 Ques re 100 MB System partition




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