When drive is shown in red as the screenshot below, it means Windows 7 is being in low disk space warning.
Lots of problems may occur because of low disk space in Windows 7, especially system partition. When Windows 7 system partition C drive is running low, there may be not enough disk space for Windows update and programs installation. What's worse, the Windows 7 computer will run slowly and the system may crash when the disk space is extremely low. There are two ways to solve Windows 7 low disk space warning. The temporarily traditional way and the magic advanced way.
The advanced and magic solution to fix Windows 7 low disk space warning is to extend system partition (C drive) by using reliable and professional partition manager software.
As Partition Magic Alternative, Aomei Partition Assistant Professional Edition is considered as latest partition magic windows 7 which perform basic and advanced features in Windows 7. To solve low disk space warning in Windows 7, you can extend system partition with "resize partition" function. At the same time, Partition Assistant can extend NTFS system partition without reboot.
Step-by-step tutorial to extend system partition (C: drive) to solve low disk space in Windows 7:
Step1: Launch Partition Assistant Professional Edition. Below is the easy-to-use interface:
Step2: Right click D partition and select "Resize".
In the pop-up window, drag the right handle leftwards to free up some unallocated space.
Step3: Move partition D rightwards to make the unallocated space be behind system partition (C drive) and click "OK".
Step4: After the step3, there will be some unallocated space behind system partition (C drive). Drag the right handle rightwards to merge the unallocated space.
Step5: Click "Apply".
With the help of Partition Assistant, you will solve Windows 7 low disk space warning and speed up your Windows 7. At the same time, the way to solve Windows Vista low disk space warning is all one. You can download partition magic for windows 7 and try now!
When drive is low disk space, not only will it show in red, but a warning notification will pop up time after time. You may follow the instruction to free up some disk space. The followings are some steps which can help you reclaim disk space in Windows 7.
Step1. Open "Start" menu. Click "All Programs" > "Accessories" > "System Tools" > "Disk Cleanup".
Step2. Select the drive you want to clean up. After clicking "OK", it will take a few seconds to calculate how much space you will be able to free on Windows 7 (C:).
Step3. Delete unnecessary non-system files. Tick the files you want to delete and click "OK".
Step4. Uninstall programs that you do not use. Click "Clean up system files" button and repeat step2. Then Click on the "More Options" tab and click the "Clean up" button under the Programs and Features section. (This step also can be completed through "Control Panel".)
Step5. Remove all but the most recent system restore point. Like step4, but click the "Clean up" button under the System Restore and Shadow Copies section.