Microsoft Self-Extractor packages only verify that the Windows system drive has sufficient free disk space for the extracted files. Microsoft Self-Extractor packages do not verify the other disk space requirements for the installation.
We recommend that you move the package to another drive. Then, run the package to start the installation.
To install an update, the Windows system drive must have at least 1.1 gigabytes (GB) of free disk space on a Windows XP-based computer. On a Windows Vista-based computer, the Windows system drive must have at least 1.75 GB of free disk space. For the best performance when you install an update , we recommend that the Windows system drive have at least 3 GB of free disk space.