I today released a new version of the EDR-DOS kernel and command interpreter.

We made progress in preventing the EDR kernel from accessing uninitialized partitions.

This is an interesting one: DR-DOS shipped with a FDISK program which initialzed partitions with a file system right away, without the user having to FORMAT it. But because of this, the DR-DOS kernel never implemented proper filesystem validation.

The whole thing falls apart when using the EDR kernel with Free FDISK and NOT formatting a partition. Curiously, the kernel could then access the non-existing filesystem. But not anymore...

You can get it at https://github.com/SvarDOS/edrdos/releases/tag/r20240821

#DOS #DRDOS #EDRDOS #FreeDOS