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Date:      Wed, 19 Oct 2016 06:33:21 +0000
From:      "Poul-Henning Kamp" <phk@phk.freebsd.dk>
To:        Arrigo Marchiori <ardovm@yahoo.it>
Cc:        Arrigo Marchiori via freebsd-fs <freebsd-fs@freebsd.org>
Subject:   Re: Random truncated files on USB hard disk with timeouts; how to debug?
Message-ID:  <7759.1476858801@critter.freebsd.dk>
In-Reply-To: <20161019062812.GA93031@nuvolo>
References:  <20161018152715.GC89691@nuvolo> <51997.1476812624@critter.freebsd.dk> <20161019062812.GA93031@nuvolo>

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In message <20161019062812.GA93031@nuvolo>, Arrigo Marchiori writes:

>It is a USB disk bought some years ago, that contains actually
>rotating platters. It has a Y-shaped cable, to get power from two
>ports.

Y-cables are a big warning sign.

You can try plugging the "power-only" plug into a high quality 1
ampere USB charger, but that is no guarantee for success.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.



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