64-DOS

64-DOS is a custom port of MS-DOS 7.1 created by the Guest Software Productions in 2004. This version revamps the entire OS kernel and everything to be 64 bit, both 86-64 and ARM64 in the newer version.
Guest Software Productions also created 3 custom windows versions to run on 64-DOS, specifically: Windows 3.64, WINDOS-64 and a port of Windows 98 for the 64 bit architecture.
Originally, the OS had a bad reception because of how niche the x64 CPUs were at the time, resulting for ending support in December 29th 2007, only 3 years after the first version released. However, after early 2010s when x64 CPUs became more popular, the 1.2 version got open-sourced by Guest Software Productions (excluding the NTFS support). Later, Guest Software Productions rebranded to Guest Softworks and made its own, new OS, named Gamma OS.
== Releases == 
*64-DOS 1.0 2004
*64-DOS 1.1 2005 (Adds support for dualbooting with Windows NT based operating systems)
*64-DOS 1.2 2007 (Adds NTFS support, support for dualbooting with non-Windows operating systems such as Linux, along with security patches)
== OpenDos-64 ==
OpenDos-64 is a community supported version of 64-DOS based off of the releasesd source code of 64-DOS 1.2. The version has added security patches and also supports more DOS applications, and more filesystems support, along with a revamped setup program.
== Trivia ==
* The original version of 64-DOS, now labled 1.0, originally didnt have a version number, and just identified itself as 64-DOS. After the release of 64-DOS 1.1, new documentation referred to the original version as 1.0 and added the 1.1 version number to the new release.
Category:MS-DOS based OS
Category:DOS Based OSes
Category:Guest Softworks OS