ei.cfg Removal Utility
Version 1.1
<http://code.kliu.org/misc/win7utils/>

When used on an original Windows 7 ISO image, this utility will disable the
ei.cfg file, thus converting a disc image into a "universal" disc image.

When used on a Windows 7 ISO image that has already been patched by this
utility, this utility will undo the ei.cfg removal and restore the disc image
to its original state.


Version Compatibilty Note
=========================

ei.cfg Removal Utility version 1.1 uses a slightly different patching method
than version 1.0, and as a result, the version 1.0 utility cannot reverse the
patches done by version 1.1, and the version 1.1 utility cannot reverse the
patches done by version 1.0.  If you would like to reverse the patch, you need
to do so with the version of the utility that created the patch.

Since version 1.0 existed for only 8 hours before being replaced by version 1.1,
this should not be a problem for most users.


Technical Details
=================

This works by toggling the deletion bit in the UDF file table, which instructs
the operating system to ignore the file and to treat it as if it does not exist.
By not physically removing the file, this eliminates the need to rebuild the
ISO, and makes this sort of fast, unintrustive patching possible.  This also
makes it possible to reverse the patch and to restore the image to its original
state, if so desired.
