Article ID: 2771571 - View products that this article applies to.
Consider the following scenario:
For example, the computer is partitioned as follows:
Setup can’t continue. Your computer will now restart, and your previous version of Windows will be restored.
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You may configure a computer in this manner for various reasons. For example, you have a dual-boot system, and you do not want to assign a drive letter to the second system drive. Or, the computer manufacturer configures this volume to store recovery data.
This issue occurs when the largest volume on the disk is not assigned a drive letter. In this situation, the upgrade process temporarily assigns a drive letter to that volume and saves temporary files ($Windows.~BT)to the volume. However, the temporary drive letter is later removed. This behavior effectively removes the temporary file location, and the upgrade process fails.
Note This issue does not occur when you perform a clean installation of Windows 8.
When this issue occurs, the following information is logged in the Setupact.log file in the C:\windows\panther directory:
Article ID: 2771571 - Last Review: October 31, 2012 - Revision: 1.0
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