Documentation

Full Manual: For complete documentation, installation guides, and troubleshooting, see our comprehensive software manual.

Compatibility & Current Status

DR DOS® 9.0 revision 550 focuses on core DOS functionality with stability and correctness as top priorities. This beta release executes standard .COM and .EXE programs and is compatible with most DOS file utilities.

Current limitations in this revision:

FAT12 and FAT16 filesystem support only (FAT32 not currently supported)
Wildcard characters limited in COPY command (work normally in other commands like DIR and DEL)
FOR loops not supported in batch files
SET command not available to modify environment variables
Input redirection and append redirection not yet implemented

These limitations reflect our clean-room development approach, where we're building features methodically to ensure quality and stability. Check our release notes to see what's been added in each revision.