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Build a safe FreeDOS multiboot menu with FDCONFIG.SYS sections and matching FDAUTO.BAT branches for gaming, networking, diagnostics, and recovery.
A forensic walkthrough of FreeDOS startup from BIOS, MBR and volume boot code through KERNEL.SYS, FDCONFIG.SYS, FreeCOM, FDAUTO.BAT, drivers, and recovery keys.
SET commands or a long PATH suddenly fail with 'Out of environment space.' The environment block has a fixed size, and here's how to actually fix it.
You edited CONFIG.SYS, rebooted, and now the system hangs or won't load drivers correctly. Here's how to get back to a bootable state without reinstalling.