Extend drive D

How to increase D drive space without data loss?

This article introduces how to increase D drive space on Windows 10/8/7/Vista/XP and Server 2019/2016/2012/2008/2003. Increase D drive size by shrinking or cloning.

When drive D is running out of space, you can expand it by getting free space from other partitions without reinstalling OS. To extend hard drive, there are two choices: Windows native Disk Management and 3rd party disk partition software. However, Disk Management only works in special condition.

A 256GB hard disk can’t be increased to 512GB, so before extending a partition volume, you must delete or shrink another one to get Unallocated space. Disk Management has Shrink Volume to decrease the allocated partition, but it can only produce Unallocated space on the right side.

Extend Volume disabled

In my Windows 10 test computer, I shrank both drive C: and E, there are 2 20GB Unallocated space generated behind these drives. But when I right click drive D, Extend Volume is disabled.

In fact, Extend Volume can only expand the drive with adjacent Unallocated space on its right side.

As you see in the screenshot, Unallocated space shrank from drive C is on the left side of D, Unalloacte space shrank from drive E is nonadjacent to D.

Increase D drive space from E

To increase D drive space in Disk Management, the only way is by deleting the right adjacent drive E, then you’ll get contiguous Unallocated space on the right side, so Extend Volume is enabled for drive D.

Tips

  1. Remember to back up or transfer all files in drive E before deleting.
  2. There is no Extend Volume feature in Disk Management of Windows XP and Server 2003.
  3. If drive D is FAT32, Disk Management cannot help you, because Extend Volume only supports NTFS partition.
  4. If you use MBR style disk but the partition type of D and E are different (Primary or Logical), Disk Management still cannot increase D drive space by deleting E.

Extend Volume enabled

The best way is running professional partition software to extend D drive. There are no such limitations above and you can increase D drive size without deleting E. Follow the steps below:

Step 1: Download NIUBI Partition Editor, right click drive E and select “Resize/Move Volume”.

NIUBI Partition Editor

Drag the left border rightwards to shrink it in the pop-up window:

Shrink E

Unallocated space is generated on the left side of drive E.

Unallocated generated

Step 2: Right click drive D and select “Resize/Move Volume” again, drag the right border rightwards to combine the Unallocated space.

Increase D drive

Click OK and back to the main window, D drive size is increased to 50GB.

Drive D increased

Tips This software is designed to work in virtual mode, to modify real disk partition, remember to click Apply on top left to confirm and start.

Increase D drive space from C

If there is no or not enough free space in other data volumes, you can shrink system partition C to increase D drive size, follow the steps:

Step 1: Right click drive C and select “Resize/Move Volume”, drag the right border leftwards to shrink it.

Shrink C drive

Click OK, Unallocated space is generated on the right side of drive C.

C drive shrank

Step 2: Right click drive D and select “Resize/Move Volume” again, drag the left border leftwards to combine the Unallocated space.

Expand drive D

Drive D is increased to 70GB, click Apply to proceed, done.

Drive D increased

Increase D drive size by cloning

What to do if you can’t get free space from all other partitions in the same disk? Don’t worry, there is still a way with NIUBI: clone drive D to another disk. If there is no new hard disk, you can clone to an existing disk, but first you need to shrink a large volume to produce Unallocated space. Follow the steps:

Step 1: (optional) Right click drive F and select “Resize/Move Volume”, drag either border towards the other side to shrink it.

Shrink partition

Then Unallocated space will be generated.

Unallocated space

Step 2: Right click drive D and select “Copy Volume“, select the 160GB Unallocated space and click Next in the pop-up window.

Select Unallocated

Step 3: Drag the border towards other side in the pop-up window to combine Unallocated space.

Copy and extend

Click Finish, drive D is cloned to drive H.

Copy drive D

Step 4: Right click drive D and select “Change Drive Letter”, select any one except D in the pop-up window.

Change drive letter

Step 5: Right click drive H and select “Change Drive Letter” again:

Change letter

Select D in the pop-up window and click OK.

Select D

Drive H is changed to D, click Apply to execute, done.

Drive letter changed

All files and programs are cloned to Disk 1, drive D is increased from 70GB to 160GB.

In Summary

This article introduces the complete solution to increase D drive space without reinstalling OS or losing data. When there are other partitions in the same disk, you can extend D drive by shrinking these partitions no matter they are adjacent to D or not. When there is no or not enough free space in other partition, clone drive D to Unallocated space in another disk. As the safest partition tool, NIUBI Partition Editor helps you shrink, move, extend and clone partitions easily and safely.

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