Article ID: 226508 - View products that this article applies to.
This article was previously published under Q226508
When you examine the application event log in Windows 2000, you may notice the following event message appearing every few seconds:
These events are usually preceded by the following single event:
Event: ID 0
Description: grovel (1712) Unexpected Win32 error: 0x15
You may also receive an error message stating that the application event log is full.
Event ID: 12291
Description: USN log read failure on partition drive letter
This behavior can occur if the Single Instance Storage (SIS) Groveler service is running, but can no longer read the database file on the volume that it is supposed to manage. When the SIS Groveler service starts, it searches for volumes to manage by looking for a root folder named SIS Common Store.
The SIS service is part of the Remote Installation Service (RIS) installation and manages volumes that contain operating system images. The SIS service reduces the disk space consumed by these images by storing duplicate files in the SIS Common Store folder.
There are two situations in which the applications events listed above can occur:
To resolve this issue, use the appropriate method:
The SIS service only manages volumes that contain a root folder named SIS Common Store.
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