> An empty but still valid Oberon filesystem will have one sector at
> sector number 19
   101| ClearDirectory~
     3     1| Sector
 00000000    9B1EA38D 00000000 00000000 0007FBFC 0000B18C 9B1EA38D
Inspecting Sector 1, after Clear, has three other words in addition. 
-- 
Tomas Kral <thomas.kral at email.cz>