Article ID: 555622
Author: Soumitra Sengupta MVP
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When a hard drive partition is low on free space, you receive a pop-out balloon warning in the System Tray (Systray) alerting you that your computer is running low, or is out of, disk space, as the thresholds are approached. By default these thresholds are 200MB, 80MB, and 50MB respectively. See the following KB article for more information:
KB300044 - How the System Restore Tool Handles Hard-Disk Space Usage (http://support.microsoft.com/kb/300044
How to disable the low disk space warning messages
To disable these balloon messages follow the steps below:
1. Open the Registry Editor by clicking on Start -> Run and running REGEDIT.
2. Navigate to the following location:
3. Right-click in the blank area of the right-hand pane of the Registry Editor and create a new DWORD Value by selecting New -> DWORD Value.
4. Name this new DWORD Value NoLowDiscSpaceChecks
5. Double-click on the new DWORD value and assign it a value of 1.
6. Close the Registry Editor and restart the computer.
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.