How to Split Large Partition Containing Windows 7

December 23, 2014

AOMEI Windows partition manager could assist you to split partition and create partition for Windows 8/7/Vista/XP and Server 2000/2003/2008 to optimize partition usages easily.

Situation1: Usually the manufacturer of laptop or desktop computer provides you with only a partition where you have to store all documents, pictures and other files. If you have only one partition of about 120GB on which Windows 7 is installed, and now you want to split partition to create partition from this hard disk. What would you do?

This might be a common problem for most users because when they purchased the computer there is only one partition. System programs and personal data are included in one partition. This is not suitable to some people's habits as HDD is commonly divided into C:, D: and E:. Another disadvantage is that this kind of mixed state of system program and personal data is not secure enough to protect data from being lost. For example, if your computer is under virus attack and you can't boot the system. Then you may possible need to reinstall the system. However, your personal photos, personal working files, videos or games will lose after you install the system again.

Situation2: when you want to use a new hard disk, the first thing you need to do is partitioning it. To begin with, you satisfy with the partition mode. But after a long time, one partition is lack of free space while other partition has enough free space. The partition mode becomes unbalanced. What can you do to take full use of the free space?

Exactly! If you have two or more partitions to keep your personal data, you don't have such kind of problem. It is the advanced operation to optimize your computer in partition management.

AOMEI Partition Assistant Professional is powerful disk management tool with many features. It is just a piece of cake for the software to help you split partition without reinstalling the system.

The whole process on how to do this is delicately explained in this article. Please free download AOMEI Partition Assistant Professional to have a try first.

Please see the step by step instructions: Below will split the system partition C: into two partitions (C and F).

Before you do:

1, you can only split the unused space of a partition to create a new partition. If a partition is totally used up, the partition will be unable to be split.

2, If one disk has four primary partitions, the program would not allow you to split the system partition or boot partition, unless you could convert one of other partitions from primary to logical partition, and then the program will allow you to split system partition.

3, the splitting process will take some time, so allow your computer to finish this task before using it for anything else.

Step 1: launch the software, the system volume C: is a large partition (about 128.73GB), and there is only one system partition on the disk. Here is AOMEI Partition Assistant Professional Edition main interface:

main interface

Step 2: Right click on C: partition, and choose "Split Partition" in the drop-down menu.

Split Partition

Step 3: in new window specify the related information for the new partition which will be split from C: system partition.

New Partition size

Step 4: Back to the main interface, you will find the Drive C: has been divided into two partitions. The partition F: is a new drive. Please click "Apply" on toolbar to commit the split partition operation to physical disk. After applying the operations, you could see that there is a new partition F drive.


Through the steps mentioned above, you can split your partition easily and safely. In addition, as all-in-one disk partition manager software, AOMEI Partition Assistant also provides other basic and advanced features, including resize/move partition, merge partitions, allocate free space, clone disk, copy partition, dynamic disk management and so on. Now Free Download and try it out!


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