A first look at the Windows 7 PDC release

BitLocker Drive Encryption

BitLocker Drive Encryption protects your files by encrypting an entire drive using strong encryption methods. In the original release of Windows Vista, BitLocker could be used only on the boot drive. Service Pack 1 added the capability to encrypt other hard drives. With Windows 7, you can also encrypt removable drives, such as USB flash drives or external hard drives.

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