SCCM Log File Locations During Operating System Deployment (OSD)

Introduction

SCCM (System Center Configuration Manager) uses log files extensively to record activities and errors during the deployment process. Knowing the locations of these logs helps administrators diagnose and resolve issues more efficiently.

Log File Locations During OSD

Below is a summary of the log file locations at various stages of the deployment process:

Detailed Stages

• Windows PE, before disk formatting: During the initial phase in Windows Preinstallation Environment (WinPE), the log file is located at X:\windows\temp\smstslog\smsts.log.
• Windows PE, after disk formatting: After formatting the disk, the log file is moved to X:\smstslog\smsts.log and C:\_SMSTaskSequence\Logs\Smstslog\smsts.log.
• Before SCCM client installation: The log file remains at C:\_SMSTaskSequence\Logs\Smstslog\smsts.log until the SCCM client is installed.
• After SCCM client installation: Once the SCCM client is installed, the log file location changes to C:\Windows\CCM\Logs\smsts.log.

Using CMTrace for Log Analysis

To analyze these logs effectively, use CMTrace, a log viewer tool from Microsoft. CMTrace highlights errors and warnings, making it easier to identify and resolve issues. Here’s how to use CMTrace:

1. Download CMTrace from the Microsoft website or obtain it from the SCCM toolkit.
2. Open CMTrace and load the log file from the appropriate location.
3. Use the search and filter features to find specific entries.
4. Monitor log updates in real-time if troubleshooting an ongoing deployment.