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VMware How to Extend C Drive Partition in Windows Server 2003, 2008

Have you ever encountered low disk space warning on C drive when using VMware Windows guest? If so, it means that you will be confronted with high-risk data loss and low work efficiency with the virtual machine. Besides, defragment and more installations are not available. In general, there are three symptoms when you need to extend C drive in VMware

Symptoms 1: There is enough free space in other data partitions other than C drive. For example, system partition - C drive is almost full but data partition - D drive is empty.

Symptoms 2: The virtual disk only holds a single C drive for system. In such case, you need to increase the size of virtual disk in advance. Then, merge unallocated space in to C drive.

Symptoms 3: You have increased the size of a virtual disk with vmware-vdiskmanager or VMware GUI (The disk was successfully expanded. You must repartition the disk and expand the file systems from within the guest operating system), but C drive capacity is the same as ever.

No matter which symptom you face, you can solve your VMware C drive low disk space warning problem to increase the efficiency of Windows-based guest system administration with complete and reliable Partition Magic Server Software - Partition Assistant Server Edition.

Solutions to the three symptoms above

The solution to symptom 1 is very easy and safe. Just choose the right version, install and launch it. Then, right click D drive and select "Resize". Please read the instructions of how to resize partition for details on these steps.

The solution to symptom 2 needs you to increase VMware virtual disk size in advance. After that, there will be a block of unallocated space at the end of the virtual disk. Then, right click C drive and select "Resize", in the pop-up window, drag the slider bar rightwards to add unallocated space into C drive. Please read the instructions of how to merge unallocated space to C drive for details on these steps.

The following paragraph will take symptom 3 as tutorial and guide you through the process to extend C drive in VMware for Windows Server 2003:

How to extend C drive in VMware for Windows Server 2003?

Scenario: The VMware virtual machine is Windows Server 2003 Enterprise x64 Edition with a singe virtual disk which is initially partitioned as system partition - C drive and data partition - D drive. With the help of vmware-vdiskmanager, additional 30GB unallocated space has been added and locates behind D drive:


Tips: In case your host computer loses power or goes down for some reason, fresh virtual machine backup is always recommended before extending C drive in VMware.

Step1: Launch Partition Assistant Server. All the partitions and unallocated space on virtual disk will be shown on the disk map.

Step2: Select D drive. Position the mouse pointer on it and drag it to the right as shown below:

Step3: Right click C drive and select "Resize" in the drop-down menu.

In the pop-up window, drag the right slider bar rightwards to extend C drive into unallocated space. Then, click "OK".

Step4: Now you can preview the extended C drive. To save the changes, please click "Apply" on the toolbar.

After all operations are complete, access Windows Server 2003 Disk Management and you will find the C drive has been expanded.

No matter what the type of VMware is, such as VMware Server, Workstation or ESX, you can extend C drive in VMware with the Partition Assistant Server Edition. If you wonder if this VMware partition manager works with your system, please download demo version and try it free.


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