From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailout03.sul.t-online.com (mailout03.sul.t-online.com [194.25.134.81]) by ozlabs.org (Postfix) with ESMTP id DE1642BEA0 for ; Sat, 6 Nov 2004 02:34:26 +1100 (EST) To: "=?iso-8859-1?Q?J=F3n_Benediktsson?=" From: Wolfgang Denk Mime-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 In-reply-to: Your message of "Fri, 05 Nov 2004 14:13:51 GMT." Date: Fri, 05 Nov 2004 15:32:18 +0100 Sender: wd@denx.de Message-Id: <20041105143223.52CDFC1430@atlas.denx.de> Cc: linuxppc-embedded@ozlabs.org Subject: Re: Handling power failure - MPC5200 List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , In message you wrote: > > > Use the standard methods: use the CF card read-only (many CF cards > > can be damaged [beyond repair] when you power off while a write > > operation is in progress). > > Is this an acknowledged fact by CF manufacturers or based on experiece ? You mean acknowledged officially in writing on letterhead paper? No. Inofficially: yes. Also many people have confirmed this behaviour, at least on the cheap "standard" (versus "industrial grade") CF cards. I recommend to specifically ask your CF card vendor / distributor for a confirmation and guarantee (in writing) that it is safe to turn off power while writing to the device. Guess what you will get? Best regards, Wolfgang Denk -- See us @ Embedded/Electronica Munich, Nov 09 - 12, Hall A.6 Booth 513 Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de "The whole world is about three drinks behind." - Humphrey Bogart