> Hi folks,
> 
> I have to disklabel a blank HD, but I cannot figure out how to calculate
> 'bx' and 'fx' disktab values.

fx is smallest allocation unit on disk, typically you want 512 bytes
bx is large allocation block, should be max. 8*fx, typically 4096 bytes

Detailed explanation can be found in /usr/share/doc/smm/05.fastfs .

-- 
Zdenek Salvet                                              salvet@ics.muni.cz 
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           If God had meant for us to be in the Army,
         we would have been born with green, baggy skin.