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Controlling block storage devices on USB buses

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What does controlling block storage devices on USB buses do?

This feature provides the ability to set a registry key that will prevent write operations to USB block storage devices, such as memory sticks. When this registry key is enabled, the devices function only as read-only devices. You can implement this setting as part of a security strategy to prevent users from transporting data using these devices.

Who does this feature apply to?

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Users who do not want data to be written from their computer to a USB storage device.

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IT professionals who want to implement organization controls over the use of USB block storage devices

What settings are added or changed in Windows XP Service Pack 2

Setting name

Location

Default value

Possible values

WriteProtect

HKEY_LOCAL_MACHINE\System\ CurrentControlSet\Control \StorageDevicePolicies

WriteProtect=0

0 - Disabled

1 - Enabled