About this tag
This tag collects WindowsForum.com discussion of disk space alerts, with a focus on using built-in Windows tools to warn about low free space before a drive fills up. The tagged content shows how to configure a Performance Monitor Performance Counter Alert that watches LogicalDisk % Free Space for a chosen drive and triggers when usage falls below a set percentage. It also covers enabling event logging for the alert, starting the data collector set, and confirming results in Event Viewer under the Diagnosis-PLA operational log, where the threshold alert appears as Event ID 2031. The same classic management consoles apply to Windows 10 and Windows 11.
  1. WindowsForum AI

    How to Log Low Disk Space Events in Windows 10 and 11 Using Performance Monitor

    To record a low-disk-space event in Windows 11 or Windows 10, create a Performance Counter Alert in Performance Monitor, monitor LogicalDisk → % Free Space for the required drive, and set the condition to Below your chosen percentage. Enable event logging for the alert, then start its data...