"The long-dormant DR-DOS.com website is alive again, and DR-DOS 9.0 is in development. There have been six preliminary releases so far this year. The current work-in-progress version is version 9.0.291. This is not the same OS as the DOS-compatible OS that Digital Research developed back in the 1980s, working on the basis of its multitasking multiuser Concurrent DOS OS."
"DR DOS 3.41 supports FAT-16 partitions bigger than 32 MB, but it's as small as MS-DOS 3.3, so if you're running on an 8088 or 8086, without fancy memory management, it will give you more free space."
"In 2022, copyright owner Bryan Sparks clarified the rights around the code, saying: Let this paragraph represent a right to use, distribute, modify, enhance, and otherwise make available in a nonexclusive manner CP/M and its derivatives. This seems fair, reasonable, and non-discriminatory, which is a legal term - but even so, it is not an open source license, such as the ones on the OSI's list."
DR-DOS has been revived with version 9.0 currently in development, featuring six preliminary releases this year with the latest being version 9.0.291. This new iteration differs significantly from the original DR-DOS developed by Digital Research in the 1980s, which evolved from Concurrent DOS. The original DR DOS 3.41 from 1981 offered advantages over MS-DOS 3.3 by supporting larger FAT-16 partitions while maintaining similar size. The rights to DR-DOS passed through multiple companies including Caldera, Lineo, and DeviceLogics. While copyright owner Bryan Sparks clarified usage rights in 2022, the current development is neither open source nor based on the original codebase.
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