piclone needs "blank" sd card.

[Gene Heskett <gheskett@shentel.net>]

Greetings all;

All i/o options in piclone are ghosted.  The help says it wants a blank 
sd card.  How it this accomplished if piclone has attempted to use it 
previously and it contains week old non-precious data?  Is it sufficient 
to wipe out the GPT partition table with dd using 20k worth 
of /dev/zero? I'm concerned that might wipe out the card totally.

Thanks.

Cheers, Gene Heskett
-- 
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