How to Increase Your VMware Virtual Disk Size Easily and Safely?

July 23, 2019

Step by step instructions to increase/change the size of virtual disk and partition in VMware. With VMware disk manager and AOMEI Partition Assistant, it is very easy and safe to optimize VMware disk space.

Video Guide

Article Tutorial

VMware Server refers to a virtualization product which enables companies to partition a single physical Server into multiple virtual machines. VMware Server is available to Windows, Linux, Solaris, and Netware. VMware Server can work with all or any of these Oss. There are many benefits when you take full use of Server virtualization products. These contain:

  • You can decline the cost of hardware maintenance due to a lower number of physical Servers.

  • You can dispose several operating systems on a single hardware platform .

  • You can improve the efficiency of your data center.

  • Each of your applications with its own virtual Server, you can prevent one application from disturbing another application when updates or changes are mage.

  • Virtual machine is independent from hardware; you can restore backup data on any hardware which is able to run vSphere.

Question: I have Windows 2003 in VMware Server. The disk 0 is 20GB and all the disk space is allocated to C drive. The disk 1 is 40GB and only has a partition D which is dynamic volume. Now C drive is running out of space, how can I extend C drive?

In this situation, when you start your computer, you are always getting a warning of low disk space. And it totally affects the efficiency of your work. Who want to stand this all the time? Is there a way to solve the problem?

Answer: To solve the problem, first we need to increase the size of virtual disk, and then extend C drive with AOMEI Partition Assistant Server Edition.

It is not easy for Windows users to increase VMware disk size because it is related to VMware virtual machine and the data security. So this article will introduce a step by step tutorial in the following paragraph.

Important Note:

- The instruction applies to VMware Server, Workstation and Player 3.x. If you are using VMware Player 2.x, upgrade to VMware Player 3.x.

- Confirm all the snapshots have been deleted.

- Ensure the virtual machine is powered off.

- Find out where your "vmware-vdiskmanager.exe" is. It would typically locate in the VMware installation directory, e.g. C:/Program Files/VMware/VMware Server/vmware-vdiskmanager.exe.

- Locate the full path to your Windows virtual machine disk (vmdk). For example, D:/Virtual Machines/Server2003Ent-x64/Windows Server 2003 Enterprise x64 Edition.vmdk

VMware Windows 2003 Disk Management

Step1: Open "Start" menu. Click "Run" and type "cmd" in the text box and then hit the "Enter" key.

Step2: In the pop-up "command prompt". Type or paste the following command:

"C:/Program Files/VMware/vmware-vdiskmanager.exe" –x 30GB "xx.vmdk"

Note: Replace 30Gb with the actual virtual disk size that you want. Replace "xx.vmdk" with the full path to the virtual machine's virtual disk.

VMware Increase Disk Size

After the step2, you will find your VMware virtual disk size has been increased. The add-on space will be displayed as unallocated and locate at the end of the virtual disk.

Virtual Disk New Size

As the "WARNING" message mentioned above, to expand the size of the partitions, you must use third-party utility. As ALL-IN-ONE partition manager, AOMEI Partition Assistant enables you to extend partition without losing data and extend NTFS system partition without reboot.

Tips: To follow the step by step instruction, please Free Download AOMEI Partition Assistant Server Edition (18.4MB).

Step1: Launch AOMEI Partition Assistant Server Edition.

AOMEI Partition Assistant

Step2: Select C drive. Right click on C drive and choose "Resize".

Resize VMware Partition

In the pop-up window, drag the right handle rightwards to merge unallocated space. Then click "OK".

VMware Extend C Drive

Step3: Click "Apply" on the toolbar and confirm the changes in the "Pending Operations" dialog box. Then click "Proceed".

Proceed Pending Operations

Step4: After a few seconds, all of operations will be completed successfully.

Operation Progress

If there is not only one partition, the unallocated space will be not behind C drive, you can move partition to exchange the location, or shrink the data partition and free up space. For more detailed information, please visit VMware Extend/Expand C Drive.

Apart from resizing partition, this software can help you allocate free space, convert dynamic disk to basic disk, convert file system from NTFS to FAT32. It can be a professional partition management tool for server users.