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Date:      Tue, 23 Apr 2019 23:52:16 +0000
From:      bugzilla-noreply@freebsd.org
To:        scsi@FreeBSD.org
Subject:   [Bug 202712] [cam] [ata] System doesn't recognize older hdd after boot
Message-ID:  <bug-202712-5313-DHYI4HZ2my@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-202712-5313@https.bugs.freebsd.org/bugzilla/>
References:  <bug-202712-5313@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202712

--- Comment #24 from Steven Hartland <smh@FreeBSD.org> ---
Another sysctl you can try to see if you can get any further is:
kern.geom.notaste=1

This should prevent geom from tasting the disk which is more than likely what
is responsible for the read requests your seeing fail.

If that does get further you could try manually reading the first and last
sectors from the disk with dd.

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