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Windows 7: How do I increase available shrink space on C?

01 Sep 2012   #11

Windows 7 Professional

Ah, finally got it. Used "Create+" in PWizard to create logical drives in the unallocated space, then booted to Windows and let it figure out drive letters, then reassigned them to be in order. Thank you to everyone, this is solved!

My System SpecsSystem Spec
02 Sep 2012   #12
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate

Quote   Quote: Originally Posted by Stewie View Post

(@Bare Foot Kid: I worked with that link a bit, but it never mentions the unallocated space I'm getting as a result here.)
Hello mate.

Yes it does from Step 1 of Method One of the tutorial.

Note   Note
Partition / Extended : Logical Drives

1) Open an elevated command prompt, in the command window that opens type diskpart and hit the <enter> key, all commands are followed by <enter>.

Here are the commands, click the images below to see how they are implemented.
list disk

select disk # (# = target disk number)

create partition extended

exit (2 times to close the command window)
If you need to create a specific size Extended partition, use this command.
create partition extended size=61440 <- 60GB
It has to be entered as MB and 1024MB = 1GB so 1024x60 = 61440

You can create any size you need using the formula above.
My System SpecsSystem Spec
02 Sep 2012   #13


Glad to hear you got it organized the way you want. If you'll post back another screenshot showing Disk Mgmt drive map and all listings we can look it over. Use Snipping Tool in Start Menu, attach using paper clip in reply box.
My System SpecsSystem Spec

17 Mar 2015   #14

Windows 8.1 x64

The next procedure works for me: (Windows 8.1)
-Control Panel->System and security->System->System Proteccion->Configure
Once there you can "disable system proteccion" by select this option or use the "Disk Space Usage" Trackbar to free space.
My System SpecsSystem Spec
19 Jun 2015   #15

Windows 7 Ultimate x64

Quote   Quote: Originally Posted by Stewie View Post
I just bought a new Alienware m18x computer, and it's partitioned into three sections, as seen in this screenshot. The thing is, I want to split it into 4 partitions: OS (150GB), Data (250GB), DATA2 (300GB), DATA3 (300GB), though if DATA2 and DATA3 were one partition, that would be fine.

However, when I go into Disk Management's "Shrink Volume..." option, it says I can only shrink it by 464GB (464394MB), even after a defrag. This would make OS about 500GB in size, which is much too big. What's odd to me is, since this is brand new computer and there's only 30- or 40-some GB of data on there, is that I can't shrink it down smaller.

Do I have to reformat to get these partitions that I want? I ask this because I can't seem to find a Windows serial key that came with the computer (only the disk) so I only want to do this if absolutely necessary. And if I don't have to reformat, how do I shrink the OS partition to ~150GB? Edit: I *did* manage to find the location of the product key, so I can reformat if necessary. Would still like to avoid this, though.

Note: I have seen this thread and searched Google a bit, but I haven't found any solutions to this particular predicament.
Hi every body,
I had this problem but on a VMWare guest OS (exactly WIN 8.1 x64),
after defragmenting drive C and then restarting the guest OS, I see that now I can shrink all of the available amount (i.e all free space on drive C),
I hope this solution would be working for you to
My System SpecsSystem Spec

 How do I increase available shrink space on C?

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