From owner-freebsd-questions@freebsd.org Sat Nov 12 02:07:47 2016 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2AF72C3C1EC for ; Sat, 12 Nov 2016 02:07:47 +0000 (UTC) (envelope-from dpchrist@holgerdanske.com) Received: from holgerdanske.com (holgerdanske.com [IPv6:2001:470:0:19b::b869:801b]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.he.net", Issuer "GeoTrust SSL CA - G4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 1CA6A130C for ; Sat, 12 Nov 2016 02:07:47 +0000 (UTC) (envelope-from dpchrist@holgerdanske.com) Received: from ::ffff:99.100.19.101 ([99.100.19.101]) by holgerdanske.com for ; Fri, 11 Nov 2016 18:07:42 -0800 Subject: Re: SSD drive appears to have been "downgraded" from SATA 2 to SATA 1 To: freebsd-questions@freebsd.org References: <20161109222002.7995b1c9@curlew.lan> <20161110163546.7b9d4105@curlew.lan> <55557ac1-1b6e-ada0-f5fa-7830e976b910@holgerdanske.com> <20161111132429.720bd97b@curlew.lan> From: David Christensen X-Enigmail-Draft-Status: N1110 Message-ID: <73f58cdd-9ad6-b002-0bc6-5c51c7e4d45d@holgerdanske.com> Date: Fri, 11 Nov 2016 18:07:41 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Icedove/45.4.0 MIME-Version: 1.0 In-Reply-To: <20161111132429.720bd97b@curlew.lan> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Nov 2016 02:07:47 -0000 On 11/11/2016 05:24 AM, Mike Clarke wrote: > I tried that yesterday. Although Windows 7 could see the drive SSD > Dashboard failed to detect it. > > This morning I discovered that camcontrol probably isn't the culprit. > The next step in rebuilding my ZFS pool was to delete everything on the > second drive and re partition it to match the new layout. Instead of > using "camcontrol security" for this drive I mounted the ZFS system > on /mnt and used "rm -r" to delete all the contents then "zfs destroy > -r" to get rid of the filesystem and all the snapshots, followed by > "zpool destroy" to remove the pool. Up to this point the second drive > had been running at 300MB/s but after rebooting it came up at 150MB/s > like the other drive. > > For my next step I'll delete the GPT partitioning scheme from this > empty drive and try formatting it with Windows 7 to see if that makes > it visible to SSD Dashboard. It seems like you are going through a lot of effort to retain a BSD system image, ZFS file systems, and/or your data (?). I find it's easier to backup/ archive everything, test all the hardware (power supply, memory, drives), replace and re-test hardware as necessary until all the hardware passes, wipe all the drives (preferably using the manufacturer diagnostic, especially for SSD's) and start over with a fresh install of the OS of my choice. David