By AOMEI / Last Updated December 23, 2014

In recently, one of my best friends Michael has a problem to complaint to me: his computer installed with Windows Server OS, and he asks me how to extend server partition to unallocated space on the left. Actually, he knows more little knowledge than middle students. But some of users may face such situation, and some of them can totally solve it by themselves, but maybe there are some people just like my friend Michael could lose his hand when this situation happens.

Can I extend server partition to unallocated space on left in disk management?

"Can I extend Server partition to unallocated space on left in disk management?" That question was asked by my friend? Most people could ask such question again. The answer is no. disk management only can merge the unallocated space besides partition on right. In other words, if there are two unallocated space that distribute opposite sides of the partition, and you want to extend that partition, only do you can merge the unallocated space that’s next to partition on right to extend, but not on left. There is no why because that’s properties of disk. Under this circumstance, it is necessary to let third-party software to extend.

How to extend Server partition to unallocated space on left with Third-party software?

With technology developing, there are so much software that manages partition and hard disk appearing in the internet. If you and my friend Michael ask such problems in searching engine such as Google, Bing, etc. countless of answers will be searched out, and they includes various advertisements about partition management tools or different posts about skill in forum. The third-party software is a good way to solve the problems mention above, but they are containing freeware or the paid software, function varies from different edition. Eyes would be confused by so much fantastic functions of software in advertisement. How to choose the third-party software that is suitable for you the most? Of these software, AOMEI Partition Assistant is great choice for common users. It is a third-party software that lets people operate partition easily. It offers many functions to extend partition.

Extend Partition Wizard: you can shrink one or more partitions you specify to extend any partition you specify with this wizard. If one partition will be almost full and other partition is nearly empty or has huge free space, you can use this wizard. Often, this wizard is used to extend partition C, because it can make operating system has space to run and accelerate the running speed of computer.  

Resize Partition: you can enlarge or shrink space with this wizard to resize partition space. if the usage of partition in computer is imbalance, for example, one partition or two more partition is nearly full, but other partition is nearly not used. So, we have to resize partition to reallocate the space of disk.

Merge Partitions: you can merge two adjacent partitions or unallocated space on disk with this wizard to extend partition.(the using way displays below) this wizard is used to the situation that is similar with what mentioned above.

This functions mentioned above can be found in the interface, and you can select any function to merge unallocated space on the left side to the partition.

There are five editions about AOMEI partition Assistant, that is Standard, Lite, Professional, Server, and Technician. Every edition has its own features. Server edition can be an example to tell you: the functions in this edition are similar with Standard editions, but Server edition supports Windows Server 2003, 2008, 2012 R2, but Standard edition can’t be installed in the Windows Server.

Here is the guide below about how to use "Merge Partitions" to extend partition. in this case, partition H will be merged with the unallocated space that is right side of partition H by the wizard "Merge Partitions".

Step 1: Download, install, and launch AOMEI Partition Assistant Server Edition. And Right click the partition you want to merge and select "Merge Partitions" this function.

Clicking Merge Partition In Software

Step 2: In the pop-up window, tick the check box of the unallocated space, and then click "OK" to continue.

A Pop-up Windows In Merge Partition Function

Step3: You can preview changes. To save the changes, please click "Apply" on the toolbar.

Clicking Apply


If the partition has running applications, AOMEI Partition Assistant will suggest you to close them or perform the operation under PreOS Mode.

You see, is this easy to extend partition to the unallocated space on the left? My friend Michael is very happy after he makes it by using this. Comparing disk management, this software offers a visual interface to operate, and you can see every steps you have operated clearly.