Check how much disk space is left
You can check how much disk space is left with Disk Usage Analyzer or System Monitor.
Check with Disk Usage Analyzer
To check the free disk space and disk capacity using Disk Usage Analyzer:
Open Disk Usage Analyzer from the dash. The window will display the Total file system capacity and Total file system usage.
Click one of the toolbar buttons to choose to Scan Home, Scan filesystem, Scan a folder, or Scan a remote folder.
The information is displayed according to Folder, Usage, Size and Contents. See more details in .
Check with System Monitor
To check the free disk space and disk capacity with System Monitor:
Open the System Monitor application from the dash.
Select the File Systems tab to view the system's partitions and disk space usage. The information is displayed according to Total, Free, Available and Used.
What if the disk is too full?
If the disk is too full you should:
Delete files that aren't important or that you won't use anymore.
Makeof the important files that you won't need for a while and delete them from the hard drive.