Windows Legacy Operating Systems
Windows 98 (codenamed Memphis) is a graphical operating system by Microsoft. It is the second major release in the Windows 9x line of operating systems. It was released to manufacturing on May 15, 1998 and to retail on June 25, 1998. Windows 98 is the successor to Windows 95. Like its predecessor, it is a hybrid 16-bit/32-bit monolithic product with an MS-DOS based boot stage. Windows 98 was succeeded by Windows 98 Second Edition on May 5, 1999, then by Windows ME (Millennium Edition) on September 14, 2000. Microsoft ended support for Windows 98 on July 11, 2006.
Windows Millennium Edition
Windows Millennium Edition, or Windows ME (marketed as being pronounced as the pronoun "Me", but commonly pronounced as an initialism, "M-E"), is a graphical operating system from Microsoft released to manufacturing on June 19, 2000 and launched on September 14, 2000.It was the last operating system released in the Windows 9x series.
Windows 2000 is an operating system for use on both client and server computers. It was produced by Microsoft and released to manufacturing on December 15, 1999 and launched to retail on February 17, 2000. It is the successor to Windows NT 4.0, and is the last version of Microsoft Windows to display the "Windows NT" designation. It is succeeded by Windows XP (released in October 2001) and Windows Server 2003 (released in April 2003). During development, Windows 2000 was known as Windows NT 5.0.