Just in case you wanna give it a go..here is the contents of a root password entry in the /etc/shadow file:

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root:weeWRSF!sfDFs:12581:0:99999:7:::

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Delete everything between the first and second colons, so that the line looks like

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root::12581:0:99999:7:::

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Save the file and exit your editor.

Reboot the system from the hard drive once more and neter root using a blank password, reset the password and then make the /etc/shadow file read-only.

Hope this makes sense, I am going from main memory here and I beelive some parts of this could be incoorect. Again, try and get expert input on ths suggestion.

Cheers.