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Date: Mon, 18 Apr 2016 08:55:34 +0200
From: Matthias Apitz <guru@unixarea.de>
To: freebsd-questions@freebsd.org
Subject: Re: tool for mapping away bad blocks on an external disk
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Thanks for all the hints; I started last night with overwriting the full
disk with:

# dd conv=noerror if=/dev/zero of=/dev/da0 bs=1m

after 12 hours it has already done 2/3 of it:

full disk:  2930277168 * 512 = 1.500.301.910.016 bytes to write
    06:30:                     1.028.246.208.512 bytes done   (980.612 blocks of 1M)

When after the procedure the problems remain, the disk will go to the
dustbin;

	matthias
-- 
Matthias Apitz, ✉ guru@unixarea.de, ⌂ http://www.unixarea.de/  ☎ +49-176-38902045
¡Dios querido denos otra vez los problemas de ayer, los que tuvimos en la RDA!
My Lord, give us back the problems of yesterday, those we have had in the GDR.