By Ailsa / Last Updated February 26, 2020

About Split Partition

Speaking of splitting partition, you may familiar with the concept. Splitting partition means divide one partition into two parts, then one partition becomes two partitions, which have the same file system with each other. After a few operations, you will get more partitions on your hard drive to save data, like your music, video, work files, and other documents. Related to split partition, you have to know the shrink partition or volume. Shrink partition or volume is a function of Disk Management, which makes you decrease the partition size of a partition, the left space is marked as unallocated space. You can create a new partition on the unallocated space. As a matter of fact, you must be aware of the restriction of shrinking volume: you cannot shrink volume beyond its half size. In other words, if a partition is 250GB, you can only shrink the partition to 125GB, and it’s not allowed to shrink the partition to 100GB or less. Therefore, Split partition is designed to make up for the limitation of shrink volume, or you can say shrink partition is a part of split partition.

Why Split System Partition in Windows 7/8/10?

A user wrote his problem on the forum like this: my new laptop hard drive is 750GB and has only one partition (the C drive). All the available space is 676GB after my Windows installed. I intended to create a 120GB C partition in Disk Management with shrink volume, but it only creates a 339GB C drive at most. I just want to make a 120GB C drive and the rest of it (approximate 510GB) as the new partition for data storage. What should I do while the shrink option does not work, is there any tool to do this? Thanks a lot.

From this case, you should know why you need to do Windows split system partition: maximize space utilization. Besides, there are other reasons that you should split system partition, get more partitions to store different data in case of virus or other unpredictable event; extend other partitions.

Split System Partition Safely in Windows 7/8/10

Generally, system partition contains many system files for Windows boot. Using the free yet professional partition manager-AOMEI Partition Assistant Standard will perfectly split system partition as you imagine in Windows 7/8/10. The special designed feature named Split Partition, which would not have any influence on system files, please rest assured. By the way, the split partition function allows you to shrink volume beyond its half size, it’s more flexible and easier to user. The following words are the instructions of Windows split system partition, please pay attention:

  • First of all, free download AOMEI Partition Assistant Standard, please install the procedure and launch it.

  • Right click the system partition usually the C drive in the home window, select Split Partition at the menu.

Split Partition

  • At the next window, specify the system C partition size to where you want by dragging the double arrow leftwards or rightwards, then hitOK.

Specify Partition Size

  • Preview the Pending Operations and the changes of the system partition, click Apply to confirm the operation of splitting system partition in Windows 7/8/10.


Tips: The operation will reboot your computer, just leave it alone.

After a while, the operation of Windows split system partition will be finished perfectly. Moreover, AOMEI Partition Assistant Standard is capable of merging partitions, formatting partition, extending system partition, migrating OS to SSD drive, and more. For advanced users, AOMEI Partition Assistant Professional has the ability to allocate free space from one drive to another, convert primary partition to logical, etc.