Windows 8 also has low disk space warning to remind you when the drive is running low on available disk space. When drive is shown in red as shown below, it means Windows 8 is suffering low disk space.
Most of Windows 8 disk-related problems are related to low disk space. Sometimes, you may just need to ignore your Windows 8 low disk space. However, it is not so simple when the problem is on the C drive. When Windows 8 system partition is running out of space, there may be not enough disk space for Windows updates and program installations. What's worse, your Windows 8 computer will run slowly and the system may crash when the disk space is extremely low.
There are two common methods you may use when encounter low disk space:
Step1: Install and launch AOMEI Partition Assistant Standard Edition.
Step2: Select D partition. Right click on it and select "Allocate Free Space".
Step3: Click "OK". You can preview the free space in C drive has been increased. To save the changes, click "Apply" on the toolbar.
As ALL-IN-ONE partition manager and powerful disk management tool, AOMEI Partition Assistant also allows you to do the following operation in Windows 8: