How to Resize Partition on Windows Server 2012

	Disk Management	Diskpart	Partition Resizer*
Shrink FAT32 Partition	NO	NO
Extend FAT32 Partition	Yes, if unallocated space is available on the right	Yes, if unallocated space is available on the right
Extend FAT32 C Drive	NO	NO
Extend NTFS C Drive	Yes, if right unallocated space is available	Yes, if right unallocated space is available
Move Unallocated Space or Partition	NO	NO
Delete Recovery/OEM Partition	NO	YES
Price	FREE	FREE	FREE
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Note: Partition resizing always requires unallocated space. Whether you use Windows tools or third-party software, ensure unallocated space is available before resizing.

Extend/Shrink Volume on Windows Server 2012 with Disk Management

First of all, you can use Windows Disk Management tool to resize the partitions. Enter Disk Management window, you can view the partitions list, select the partition you want to resize, right-click it, then you can choose “Shrink Volume” or “Extend Volume” to manage your partitions.

Condition: There must be some unallocated space on right side of the disk volume, or the “Extend Volume” option will grey out.

How to create unallocated space next to the drive you want to extend with disk management? How to extend disk space in Server 2012?

Solution: Delete volume next to the partition you want to extend (This is the only method that would work if you use Disk Management to extend disk space)

Note: You may backup data to another partition at first, and then safely remove partition in disk management. If you do not want to move data or delete volume, Partition Resizer Server can resize any partition and move unallocated space without losing data.

Resize Partition on Windows Server 2012 with Command Prompt

The second solution is diskpart command prompt, you can make it easily with the specific instructions bellow:

1. Run CMD by press “Win+R”, type “CMD” in the window.

2. Type “diskpart” in the window and press Enter.

3. Type “list volume”

4. Type “select volume X (X is the drive letter of your disk drive.)

5. Type “extend size=10240 (size stands for the capacity you will extend by and the unit is MB) and Enter, if you want to shrink your volume, you can type “shrink” to replace “extend”.

6. Type “exit” and finish.

Condtion: Diskpart can only work when

• There is unallocated free space next to the volume you want to extend

Resize Partition without backup or unallocated space - 100% data safe

Partition Resizer Server Edition, a reliable server disk space allocation program, is 100% safe with roll-back tech to protect your server. It can shrink volume, move unallocated space to any drive by moving partitions without losing data.

Video - how to move a partition to get unallocated space to target drive

Move partition on Windows with Partition Resizer

[Guide] Steps to extend volume without data loss (Shrink, extend volume without losing data)

This step by step guide will show you the right way to extend any volume using  IM-Magic Partition Resizer.

Example #A: Resize C Drive (Extend C) in Server 2012 R2

Step-1  Download install, and launch the program.

Step-2 Right click the large volume to produce unallocated free space. (Unallocated space is needed for extending a volume.)

Steps to resize your disk partition

Step-3  Then right click c and drag the border to acquire the free space.

Steps to resize your disk partition

Step-4 Apply the changes.

Example #B: Shrink C Drive in Server 2012 R2

IM-Magic Partition Resizer can help shrink the C drive without losing data by the following steps.

• 1, Right click the C drive in Partition Resizer, choose 'Resize/Move Partition'
• 2, Drag the left or right border of the C drive, make it smaller, or you may also type the exact volume space you want to create for the C drive
• 3, Click APPLY CHANGES (All the previous operations are virtual and can be canceled, until you click this APPLY CHANGES)

And then you will have a smaller C drive.

Also read: How to shrink c drive in server 2012