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Date:      04 Apr 2002 13:26:09 -0800
From:      swear@blarg.net (Gary W. Swearingen)
To:        "Matthew D. Fuller" <fullermd@over-yonder.net>
Cc:        jim <jim@jwweeks.com>, Sam <sam@wa4phy.net>, Doug Silver <dsilver@quantified.com>, stable@FreeBSD.ORG
Subject:   Re: SCSI tape error using Amanda/dump
Message-ID:  <6bsn6b40lq.n6b@localhost.localdomain>
In-Reply-To: <20020403114739.P95986@over-yonder.net>
References:  <3CAA0BF9.2CE0EB2A@vortex.wa4phy.net> <Pine.BSF.4.21.0204021923460.313-100000@veager.jwweeks.com> <20020403114739.P95986@over-yonder.net>

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> On Tue, Apr 02, 2002 at 07:27:08PM -0500 I heard the voice of
> jim, and lo! it spake thus:
> > On Tue, 2 Apr 2002, Sam wrote:
> > 
> > > FWIW, anybody know of a way to "rejuvinate" corrupted,
> > > but otherwise little used tapes?
> > 
> > Have you tried a large magnet?  Sounds like a joke, but it works on other
> > magnetic media.  I used to see these commercial sold to clear VHS
> > tapes.  If the tape is otherwise un-usable, give it a try.

DON'T TRY IT before determining that the tape doesn't need to be
formatted with software and/or hardward and/or time which you don't
have.  IIRC, bulk-erased TRAVAN tapes need special hardware.  The is (or
was) free UNIX software to format the old QIC-80 tapes and reformatting
was VERY slow anyway.  I've not heard about more recent tapes, but I'm
guessing it's the same story.

I suppose that bulk erasers are mostly used prior to tape destruction.

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