Depending on which version of Windows you run, temporary files are usually stored in C:\WINDOWS\TEMP. This tweak shows how to move the location of the temporary file directory.

Open up AUTOEXEC.BAT with a text editor, it is normally found at C:\AUTOEXEC.BAT. If you're run Windows 9x it maybe possible to right-click the file in explorer and choose 'Edit'.

Add two new lines, or modify the existing lines if they are already there, as follows:

SET TEMP=[directory]
SET TMP=[directory]

e.g. SET TEMP=C:\GARBAGE

Save AUTOEXEC.BAT, create the directory entered above and reboot.

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.