change root password for clients installation

[Gerald Houart]

perhaps a stupid question but i was not able to modify root password for clients installation!

when i do so with an existing password (from password or shadow file) on another debian linux computer it is not usable after installation 
what kind of encryption is used to generate root password in fai? how to generate a password to insert in DEFAULT.var ?

thanks by advance
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Gérald HOUART
Support informatique du bâtiment NO
Universite Libre de Bruxelles
ext 5604 / bureau 2.o8.216
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