Some disk utilities may overwrite a number of beginning sectors of a partition they delete. It must also overwrite any operating system already present on the destination disk. Instead, the system will automatically overwrite the oldest entries when the memory runs out. This means that building a new configuration cannot overwrite previous configurations. The next update will overwrite this excess data. BK gets written into FD and can be used to overwrite a pointer. Records can never be saved so as to overwrite other changes, preserving data integrity. In some cases, the incorrect data might overwrite memory used by the operating system. Since this directly imports names (without qualification) it can overwrite existing names with no warnings. These simply overwrite the corresponding LAPACK routines from Netlib. An active network attacker can overwrite Secure cookies from an insecure channel, disrupting their integrity. New results do not overwrite prior values. In Windows Vista and upwards the non-quick format will overwrite as it goes. Since in-place algorithms usually overwrite their input with output, no additional space is needed. The material was recovered after the overwrite attempts from unallocated space.