From owner-freebsd-questions@FreeBSD.ORG Thu Apr 9 19:23:31 2015 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5CB1B5F0 for ; Thu, 9 Apr 2015 19:23:31 +0000 (UTC) Received: from smtp1.bway.net (smtp1.v6.bway.net [IPv6:2607:d300:1::27]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 34062A86 for ; Thu, 9 Apr 2015 19:23:30 +0000 (UTC) Received: from gecko4 (host-216-220-115-15.dsl.bway.net [216.220.115.15]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: m1316v@bway.net) by smtp1.bway.net (Postfix) with ESMTPSA id C352B95851 for ; Thu, 9 Apr 2015 15:23:21 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=bway.net; s=mail; t=1428607401; bh=ME/ZY4HvS7eZuI4Jsbh6RYDXNj3nLFfutKdUh75hGKQ=; h=Date:From:To:Subject:Reply-To; b=GqScbMOhfse6woMneogo6XMYfaOGlvKkHi3iCpOCHAlMb4P+KFaI+Fov1+j8WJxZz h6GDmWbubd4vFMFHmInslmksU9gP/C2491Dc9WpY7yf+EVm6pksvI8fZpwBiA6hM04 dpgjA8uo9YIRK1hoN82ULqjVJAiGzdvjzcynCZ90= Date: Thu, 9 Apr 2015 15:23:21 -0400 From: mfv To: freebsd-questions@freebsd.org Subject: Setting Trim _AFTER_ a New Install Message-ID: <20150409152321.65de5fd0@gecko4> Reply-To: mfv@bway.net MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Apr 2015 19:23:31 -0000 Hello, I've recently installed FreeBSD r10.1 using bsdinstall and then loaded a large number of programs and data. After spending considerable time on the installation I discovered that my SSD has TRIM which appears to be quite useful. After some investigation I understand that it is a simple flag that can be set after booting into single user mode. I hope my questions are simple: If TRIM is enabled will it mess up the disk so that everything has to be reinstalled? If not, is there anything else I should be aware of? With thanks ... __o _ \<,_ Marek (+)/ (+) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~