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Memory Dump Files
Note: The issue described below does
not affect you if the system partition or system drive is encrypted (for more information, see the chapter
System Encryption) and if the system is configured to write memory dump files to the system drive (which it typically is, by default).
Most operating systems, including Windows, can be configured to write debugging information and contents of the system memory to so-called memory dump files (also called crash dump files) when an error occurs (system crash, "blue screen," bug check). Therefore,
memory dump files may contain sensitive data. VeraCrypt
cannot prevent cached passwords, encryption keys, and the contents of sensitive files opened in RAM from being saved
unencrypted to memory dump files. Note that when you open a file stored on a VeraCrypt volume, for example, in a text editor, then the content of the file is stored
unencrypted in RAM (and it may remain
unencrypted in RAM until the computer is turned off). Also note that when a VeraCrypt volume is mounted, its master key is stored
unencrypted in RAM. Therefore, you must disable memory dump file generation on your computer at least for each session during which you work with any sensitive data and during which you mount a VeraCrypt volume. To do so in
Windows XP or later, right-click the 'Computer' (or 'My Computer') icon on the desktop or in the
Start Menu, and then select
Properties > (on Windows Vista or later: >
Advanced System Settings >) Advanced tab > section
Startup and Recovery >
Settings > section Write debugging information
> select (none) >
Note for users of Windows XP/2003: As Windows XP and Windows 2003 do not provide any API for encryption of memory dump files, if the system partition/drive is encrypted by VeraCrypt and your Windows XP system is configured to
write memory dump files to the system drive, the VeraCrypt driver automatically prevents Windows from writing any data to memory dump files.