A page fault causes the following sequence to occur.

1. Trap (shut in) to the operating system.

2. Save the process registers and process state.

3. Verify that the interrupt was a page fault.

4. Check that the page reference was legal and determine the location of the page on the disk.

5. Issue a read from the disk to a free frame

6. Whereas waiting, allocate the CPU to some other user.

7. Interrupt fro the disk.

8. Save the registers and process state for the other user.

9. Verify that the interrupt was from disk.

10. Correct the page table and other tables to show that the desired page is now in memory.