Mailbox database drive specification is missing

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at]  

Topic Last Modified: 2006-05-15

Microsoft® Exchange Server 2007 Disaster Recovery setup cannot continue because Disaster Recovery setup cannot access the mailbox database drive specification that was used in the previous installation of this server.

Microsoft Exchange Disaster Recovery setup requires that the same mailbox database drive specifications previously used for this server be available during the restore.

To resolve this situation, configure the drives to match the original logical drive configuration and rerun Microsoft Exchange Disaster Recovery setup.

Assign or change a drive letter

  1. Open Computer Management (Local).

  2. In the console tree, click Computer Management (Local), click Storage, and then click Disk Management.

  3. Right-click a partition, logical drive, or volume, and then click Change Drive Letter and Paths.

  4. Use one of the following procedures:

    • To assign a drive letter, click Add, click the drive letter you want to use, and then click OK.

    • To modify a drive letter, click it, click Change, click the drive letter you want to use, and then click OK.

For more information about how to assign drive letters, see "Assign, change, or remove a drive letter" (