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Windows 7: What's on that 100MB partition? Can I delete it?

25 Nov 2009   #11
quux

Windows 7
 
 
How to delete it without Linux

I explain in text and video here:

Removing Windows 7 Recovery Partition | ITcookbook.net


My System SpecsSystem Spec
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25 Nov 2009   #12
Barman58

Windows 10 Pro x64 x2 Windows 10 Enterprise x64, Ubuntu
 
 

The use of a separate Boot/Recovery partition is the best possible practice if you are running or contemplating running multiple operating systems.

By having the boot system separate from the operating systems. A problem with one Operating System does not then bring down the whole system, just because the boot files happened to be on that particular partition.

There are far more help requests on SevenForums from those who remove an OS in a multi-boot and end up with a non operational system, than issues with the 100MB partition.

As for the argument that it uses one of four possible "Primary" partitions the big shock here is that the later Microsoft operating systems do not need to be on a primary partition.

The changes made with Vista mean that they can be installed into a logical drive on an extended partition. In fact for a long time during the Beta testing phase I ran Windows 7 on such a set-up without any adverse effects.
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25 Nov 2009   #13
The Apathetic

Windows 7 Ultimate x64
 
 

When I was partitioning my HDD using the win7 dvd it also created that stupid 100MB partition which screwed me over cause it kept saying that I can only have 4 partitions and that 100MB partition was taking 1 of them while I wanted 4 active partitions (C,D,E,F) but I fixed it somehow, don't really remember how I did that.

Anyway the 100MB partition is still there in the disk management but I don't really care for it, it's just 100MB, who cares lol.
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26 Nov 2009   #14
quux

Windows 7
 
 

Quote   Quote: Originally Posted by Barman58 View Post
The use of a separate Boot/Recovery partition is the best possible practice
I completely agree. While I have provided a recipe for deletion, I cam careful to say (in bold red text) that it's a recipe that shouldn't be used.
My System SpecsSystem Spec
26 Nov 2009   #15
Ztruker

Windows 10 Pro X64
 
 

This little blurb was useful to me:

On a fresh installation of Windows 7, the installer will create the Bitlocker partition. If you do not intend to use Bitlocker, this partition can be subsequently removed.

The 100MB system/boot partition will be available for Ultimate, Business and Enterprise editions. Also, in addition to being used for BitLocker encryption, it holds the Recovery environment (WinRE) and boot files. Which are always useful for troubleshooting when no Disks are on hand.

Found it here: Can I delete the system reserved partition in a post by Debbie - Support Engineer
My System SpecsSystem Spec
02 Dec 2009   #16
kausikdatta

Windows 7 Professional 64-bit SP1
 
 

IF someone is still reading this thread, my question is - when I am upgrading from Vista, will the Win7 installer still create its own system partition or will it merge with the existing one?
My System SpecsSystem Spec
02 Dec 2009   #17
gregrocker

 

The 100mb System Reserved partition is valuable not only because it contains the MBR, but also makes the same Repair console on the Win7 DVD and Repair CD available by tapping F8 during Windows bootup.

If you want to get rid of it, delete and recover the space using a 3rd party partition manager like free Partition Wizard to Resize into the deleted space. Then Modify>Mark as Active the WIn7 partition.

Afterward you will need to boot into the Win7 DVD Repair console to Startup Repair - Run 3 Separate Times to write the MBR to the Windows 7 partition.
My System SpecsSystem Spec
04 Dec 2009   #18
kausikdatta

Windows 7 Professional 64-bit SP1
 
 

That's a wonderful idea, Gregrocker. But I suppose it is not really necessary to do, right? It didn't seem that there would be any advantage in merging that partition with the system partition and having the MBR rewritten to the Win 7 partition (but I may be wrong).
My System SpecsSystem Spec
04 Dec 2009   #19
gregrocker

 

Quote   Quote: Originally Posted by kausikdatta View Post
That's a wonderful idea, Gregrocker. But I suppose it is not really necessary to do, right? It didn't seem that there would be any advantage in merging that partition with the system partition and having the MBR rewritten to the Win 7 partition (but I may be wrong).
No, not necessary at all. But some want to do it anyway so I always say why it is useful, then how to get rid of it if desired.
My System SpecsSystem Spec
18 Feb 2010   #20
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Posted in the wrong place - sorry
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 What's on that 100MB partition? Can I delete it?




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