Symptoms

1. You install Acronis True Image.
2. After a while you notice that system drive is full.

Cause

Maximum disk space usage for system protection is set to 100% during installation of Acronis True Image.

Solution

Open Windows System Protection and decrease disk space usage:

1. Open system properties: Start -> Control Panel -> System.
2. In Computer name, domain, and workgroup settings section click Change settings:
3. Navigate to the System Protection tab:
   
4. Under Configure restore settings, manage disk space, and delete restore points click Configure:
   
5. Check whether Max Usage in Disk Space Usage section is set to 100%:
   
6. Decrease Max Usage: