Consider the following scenario. On a Windows Vista-based computer, you configure the BitLocker Drive Encryption feature to encrypt a volume or to decrypt a volume. Then, you restart the computer in Windows Preinstallation Environment (Windows PE) or in Windows Recovery Environment (Windows RE). In this scenario, you unexpectedly experience heavy disk activity.

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This problem may occur in rare instances in which a volume has not been converted to a fully encrypted or fully decrypted state by BitLocker Drive Encryption. In this situation, BitLocker Drive Encryption may resume encryption of a volume or decryption of a volume when you restart the computer in either Windows PE or Windows RE.

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To work around this problem, follow these steps:

1.	Click Start, type cmd in the Start Search box, and then click cmd in the Programs list.
2.	At a command prompt, type the following command, and then press ENTER: cscript %systemroot%\system32\manage-bde.wsf -pause volume_letter: For example, if you want to pause encryption or decryption on drive X, type the following command at a command prompt, and then press ENTER: cscript %systemroot%\system32\manage-bde.wsf -pause X:

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