Thanks to all who responded. My problem is sorted out, the disks are 
optimized, and I am a bit more informed. The following people 
answered:
alan_at_nabeth.cxo.dec.com
abs_at_osfulsa.ulsa.mx
baranowskit_at_gdynia_at_genesis.prokom.gdynia.pl
IY_at_vilspa.esa.es
The following commands have been mentioned:
disklabel
scu
Again, thank you all very much.
Rgds,
Johan Erlank
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|| Johan Erlank    |Telephone number |Internet: j_erlank_at_sames.co.za ||
|| MIS Dept.       |+27+12 333-6021  |                               ||
|| SAMES (Pty) Ltd |   012 333-6021  |                               ||
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Received on Mon Sep 02 1996 - 09:01:27 NZST