[comp.sys.mac] HFS volume structure

hinton@netcom.UUCP (Greg Hinton) (10/27/89)

I'm trying to decipher the on-disk structure of HFS and have gotten
just enough information from _Inside Mac_ to be hazardous.  I'm hoping
some of you gurus out there can supply the missing pieces of the puzzle.

When I examine the Extents Tree and Catalog Tree, the first block never
conforms to the structure detailed in _Inside Mac_.  I'm guessing that
the first block is not a normal B*-tree node, but rather contains
summary information about the tree, such as pointer to root node, pointer
to free nodes, etc.  Am I right?  What is the structure of that first
block?

Thanks in advance.

-- 
Greg Hinton
DOMAIN: hinton@netcom.uucp
UUCP: uunet!apple!netcom!hinton