Increase disk partition size Windows Server 2012 r2 with/without unallocated space

Summary

Disk space is low in Windows server 2012? Here you can increase disk partition size Windows Server 2012 r2 with or without unallocated space.

Andrew Wright

Updated on 10/01/2022

by Andrew Wright

Follow @IM-Magic

Expanding partition size varies with the following terms:

  • OS temp files, cache files, paging files, installed program files (It may save up to several GB at most in disk space)
  • Unallocated space, and its place by the target drive, right ok, left no with disk management(It's easy to extend a drive when there were already some unallocated space at its right side. There are also solutions in this article when no unallocated space is available at the right side of the target drive)
  • Same disk or another disk (RAID could help increase partition size from another disk in Server 2012 up to disk size)

How to extend partition with unallocated space in windows server 2012 r2?

Before proceeding, you need to determine where is the unallocated space and the location of the partition you want to extend. The unallocated space can be at two possible locations.

#1 Unallocated space at the right side of target volume

When the unallocated space is right behind the partition that you want to extend, you may use Disk Management to extend volume in this case with the following steps.

Step 1: Open disk management by typing diskmgmt.msc in the Run window (Start -> Run or pressing Win+R icon on your keyboard to start the RUN window)open disk management from cmd

Step 2: Right click the drive you want to extend when there were already unallocated space at its right side, and go to Extend Volumeextend c drive server 2012

Step 3: Expand the partition size by entering the full available size to claim the unallocated space in Disk Management.

This is the way you can increase a disk partition volume size without a third party program.

#2 No right side closeby unallocated space

If there were unallocated space but not at the right side of the target volume, Disk Management can do nothing about moving the partitions or unallocated space, at this time, third party tool Partition Resizer Server can help to move unallocated spaces to anywhere safely without losing data.

However things may get complicated when there are no right side unallocated spaces.

Increase partition volume without unallocated space server 2012

How to create unallocated space? Here are several options:

Option1: Deleting a right side partition will create right side unallocated space to get the job done. (You may right click the volume and delete volume which is at the right side of the target volume in disk management. This is the method to increase partition volume without software)delete volume to extend c drive server 2012

Option2: Or you may move unallocated space to the target volume with safe third party professional tool Partition Resizer Server. (Move in between volumes right/left forward, and right click target volume to increase its side when the unallocated space has been adjusted to the right side of the target volume)

This following video shows how to move unallocated space and partition location without losing data.

Move D partition and move unallocated space without losing data

Option3: Or add new disk to Server 2012 with RAID Arrays, and add the new space to the targe volume with Partition Resizer Server when the unallocated space is not at the right side of the target volume with the following steps.

  • 1, Add new disk to server computer with RAID arrays
  • 2, When the unallocated space is just at the right side of the target volume, you may right click the target volume in Disk Management, and go to EXTEND VOLUME to get it expanded
  • 3, When the unallocated space is far away from the target volume or it is not at the right side of the target volume, you need to use Partition Resizer Server to move the in between volumes by right clicking it in Partition Resizer Server, and go to RESIZE/MOVE PARTITION and move the volumes without losing data when the mouse shows cross arrows in the software.

#2 Increase partition size with unallocated space via third party tool

Example: Unallocated space is not right behind the partition that you want to extend.

If the unallocated space is right behind the partition that you want to extend, you can use Windows’ built-in disk management tool to extend disk space. Necessary steps are:

1, Windows+R, write “diskmgmt.msc” in the box and press enter

2, Disk management will open. Now right click on the partition you want to extend. Now pick the option “Extend Volume” from the drop-down and click next.

If the option “Extend Volume” is not greyed out then you will be able to extend the partition easily.

When the “extend volume” is greyed out, you won't be able to use the Disk Management tool to extend partition volume. Now you have to use 3rd party partition tool to increase partition volume.

IM-Magic Partition Resizer is a program to help you resize the disk space without losing data and with OS protected. Necessary steps are:

Step1: Download install and launch IM-Magic Partition Resizer Serverdownload free windows 10 partition software

Step2: For shrinking a large volume to produce unallocated space, you may right-click the partition and drag the border to produce unallocated spaceSteps to add move resize unallocated space to c drive in Windows server 2012

Step3: When there were unallocated space produced or when you added a new disk to server 2012 using RAID, and the new added disk shows unallocated space, you may move the in between drives in Partition Resizer Server with a right click, and go to RESIZE/MOVE PARTITION, move the partition left or right forward when the mouse shows cross arrows. Steps to add move resize unallocated space to c drive in Windows server 2012

And then the unallocated space will be moved to another place.

Step4: When the unallcoated space has been moved to the side of the target volume, you may right click the target drive, go to RESIZE/MOVE PARTITION and move the boarder to acquire the unallocated space.

Steps to increase partition space in Windows serverSteps to increase partition space in Windows server

Step5: Click Ok and apply the change/changes.apply changes to create new partition

Why need to extend partition with unallocated space?

Not enough space” is one of the most common problems we face while running windows server 2012 r2. Since partition size is not infinite, today or tomorrow the disk space or c drive will be full.

When the partitions are full, we will have 2 logical choices.

First, you can free up some disk space which only works if it's the first time. Also, it's a temporary solution because freeing up don't add space to the partition. It just removes files and clears some space for you.

The second choice is you can extend the partition size by adding space to it if the previous disk partition scheme was not reasonable. Windows has a build in tool to manage disk partitions. But this tool has a lot of limitations.

Cons of Disk Management: It can only add space to a partition when the unallocated space is at the right side of it.

So unallocated space is very important for resize the partition or extend disk space. Disk partition needs to have enough space to keep the up the operating speed and add new software or updates.

What is unallocated disk space

Unallocated disk space means that it's not allocated or attached to any existing partitions. It's just a free space on the hard drive which can be used to extend a partition. You can also create a new partition on this unallocated space.

Related Product