
 - new_partition, non-expert mode: if cannot create partition, maybe
   try prim<->ext conversions for partitions where the valid flag is clear.

 - Rewrite README file

 - In expert mode, provide a function to move an extended partition's
   rootsector.

 - Maybe: Make it also runnable under TOS. The only things to change
   should be the disk read/write functions, and the device naming. But
   no GUI...

