MSI Wind Top AE2420 3D User Manual page 70

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System operations
[System Partition Recovery] will format the c drive only. only the c drive
will be restored to manufacturer default. other drives will not be affected.
It is highly recommended that users select [System Partition Recovery] to
restore the system.
6. the system recovery will format your HDD partition. Make sure that the
important data have been backed up. click [YES] to continue; click [no] to
stop the system recovery.
click [YES] again to reconfirm; click [no] to stop the system recovery.
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