Table Of Contents

• Select a kernel
• download official FreeDOS kernel (0xFD)
• download development branch of FreeDOS kernel (0xFD)
• download FDOS' DOS-C kernel (0xDC)
• FAT+

FreeDOS kernel - OEM id 0xfd

The "official" kernel is the sourceforge 'freedos' project 'kernel' source.
The current kernel is stored in SVN and is the TRUNK branch.
It is meant to remain as a stable branch with aim of 100% compatibility with MS/PC-DOS (R) for those needing a stable kernel for their product [personal or commercial].

Development version of the FreeDOS kernel - OEM id 0xfd

This is an unoffical branch branch of the offical 'freedos' project's kernel.
Formally I helped to maintain the kernel within the offical SVN repository, my changes (and those of others who have submitted patches) are now stored in a git repository on GitHub - github.com/PerditionC/fdkernel. Periodically change sets may be sent to FreeDOS kernel list to hopefully be included in future official kernel releases.

FDOS' DOS-C kernel - OEM id 0xdc

Based on the old development branch (kernels with w revision suffix - for work-in-progress). Note: The form dev branch in the freedos SVN has not been maintained for a while and its use is discourged for all purposes!
Source may be found in the SourceForge 'fdos' project for this kernel - may move to git in the future. The goal is to continue Pat's goals including merging back in some of the original portability and advanced features at the expense of some compatibility with older hardware and software.

Stable kernel snapshot from svn TRUNK branch. Compiled with Open Watcom.
Kernel archive includes:

• KERNEL.SYS - core; implements DOS API
• COMMAND.COM - command interpreter
• SYS.COM - system installer; copies kernel file(s), command shell, and usually updates boot sector
• COUNTRY.SYS - NLS resource file (COUNTRY, UCASE, LCASE, FUCASE, COLLATE, DBCS and YESNO); used with COUNTRY= statement in CONFIG.SYS
• Code Page Information - mapping of characters (letters) to code points, see CPI help - used with display and mode
• SHARE.COM - file sharing and locking support; see SHARE; ONLY works with FreeDOS kernels!

Latest release kernels

• latest FreeDOS kernel release
• latest update packages for fdpkg)
• releases - from SourceForge project

Fat32 enabled, for 386+

• ke386f32.zip - implements DOS API, recommended for most
• command.com - command interpreter

Other build variations

• ke86f16.zip - FAT16 and FAT12 only, for 8086+, for older computers and programs incompatible with FAT32 based DOS
• ke386f16.zip - FAT16 and FAT12 only, for 386+
• ke86f32.zip - FAT32 enabled, for 8086+, same options as used in release builds

Source code

• kernel_s.zip - source from SVN used to compile above builds
• cmd_s.zip - source for command interpreter TODO

Testing kernels

• testing - see here for posted nightly or other kernels for testing purposes

Development kernel snapshot.
Builds from git source available in git directory.
Source and fdpkg archives are available there as well, or get source from Github - https://github.com/PerditionC/fdkernel.

FAT+ is a specification for FAT compatible file system with support for files greater than 4 GiB. (Prior drafts of the specification are still available - draft release 1, initial draft - diff between draft r1 & r2. See also the DR-DOS/OpenDOS Enhancement Project (DR-DOS trademark DRDOS Inc.)