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Solution to Windows 7 and Vista Problem: C Drive Full, D Drive Empty

"C: drive full but D: drive almost empty"

My friend has a 1 year old laptop that is running Windows 7. His C: hard drive is full but the D: hard drive is practically empty. He runs QuickBooks from his C: drive but it pops up with error warnings that his drive is almost full and he is worried that he won't be able to use it anymore. What do we do?"

After reading some blogs and forums, the similar questions are asked by many Windows 7 users. Then, how to move free space from D drive to C? To fix the problem, I will introduce a solution in this article.

Non-destructive solution to C drive full, D drive empty in Windows 7

Unlike Windows XP/2003, there is a snap-in utility – Windows 7 Disk Management which allows user to resize partition. But there are some limitations, for example, you cannot extend volume when there is no contiguous unallocated space behind partition. To extend partition, you must backup data and delete existing partitions which are time-consuming and risky.

As Partition Magic Windows 7, Aomei Partition Assistant is considered as non-destructive partition manager software. With its resize/move features, it's very easy and safe to move free space to solve "C drive full" problem.

How to solve "C drive full" problem with Aomei Partition Assistant?

With its user-friendly interface, it is extremely easy-to-use even for beginner. The followings are step by step instructions of how to solve "C drive full" problem:

Step1. Launch Aomei Partition Assistant Pro Edition. Right click D drive and select "Resize".

Resize Option

In the pop-up window, drag the right handle leftwards to shrink D drive.

Shrink D Drive

Step2. Move D drive. Position the mouse pointer on D drive and drag it rightwards to make the unallocated space be behind C drive. Then click "OK".

Move D Drive

Step3. Right click C drive and select "Resize". In the pop-up window, drag the right handle rightwards to extend C drive. Then click "Ok".

Extend C Drive

Step4. Click "Apply" on the toolbar.

Click Apply

As mentioned above, only several mouse clicks, you can move free space from D drive to solve "C drive full" problem.


When partition a hard drive in Windows 7, we recommend you allocate more space to C drive. As C drive full may cause computer slow and even crash.

Apart from resize/move features, Aomei Partition Assistant Pro Edition also can help you create/delete/format partition, clone & copy partition/disk, convert FAT32 to NTFS, wipe partition and disk, etc.

Try before purchase: you can Download Demo version and check how it works.

For 32-bit computer, Aomei Partition Assistant Home Edition is a free all-in-one partition manager software and reliable disk management utility.

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