The Windows 95 I/O system assumed that if it wrote a byte, then it could read it back

Raymond Chen August 27, 2015 Aug 27, 2015 08/27/15

In Windows 95, compressed data was read off the disk in three steps. The raw compressed data was read into a temporary buffer. The compressed data was uncompressed into a second temporary buffer. The uncompressed data was copied to the application-provided I/O buffer. But you could save a step if the I/O buffer was a full cluster: ...