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.

Consider the following scenario:

• You configure the system to generate a full memory dump file when fatal system errors occur on a computer that is running Windows Server 2008 or Windows Vista.
• The dump file and the paging file are configured to reside on the same volume.
• Sufficient free disk space is available on the volume for the dump file. For example, 10 gigabytes (GB) of free disk space is sufficient to save a full memory dump file on a computer that has 8 GB of physical memory.

In this scenario, a memory dump file may not be generated when a fatal system error occurs. However, you find a DumpXXX.tmp file in the location that you specified to save the dump file.

This problem does not occur if the free disk space is larger than two times the size of the physical memory. Additionally, this problem does not occur if the Memory.dmp file already exists.