Consider the following scenario:

• On a computer that is running Windows Server 2008 or Windows Vista, a page file is configured on a hard disk drive.
• The page file is configured to use the System managed size option.
• The free disk space is not enough to hold the page file.

In this scenario, you find that the page file size is alternately too small or too large at each startup. Or, no page file is generated. Also, because of the incorrect page file size, a dump file may not be generated.

Additionally, the following event error is logged in the System event log:

Source: volmgr
Event ID: 49
Level: Error
Description:
Configuring the Page file for crash dump failed. Make sure there is a page file on the boot partition and that is large enough to contain all physical memory.