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Chapter 6. Initialization and Cleanup Routines > Writing Shutdown Routines
Writing Shutdown Routines
If a driver has special processing to do before the operating system disappears, a driver should supply a Shutdown routine.
Execution Context
The I/O Manager calls a Shutdown routine during a system shutdown. As described in Table 6.5, the Shutdown routine runs at PASSIVE_LEVEL IRQL, which means it has access to paged system resources.
