From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from dell-paw-3.cambridge.redhat.com ([195.224.55.237] helo=passion.cambridge.redhat.com) by pentafluge.infradead.org with esmtp (Exim 3.22 #1 (Red Hat Linux)) id 15gtsb-0007iN-00 for ; Tue, 11 Sep 2001 21:11:33 +0100 From: David Woodhouse In-Reply-To: <20010911182623.15217.qmail@qis> References: <20010911182623.15217.qmail@qis> To: "Nikolai Vladychevski" Cc: linux-mtd@lists.infradead.org Subject: Re: duplicate DoC millenium with dd Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 11 Sep 2001 21:17:30 +0100 Message-ID: <8583.1000239450@redhat.com> Sender: linux-mtd-admin@lists.infradead.org Errors-To: linux-mtd-admin@lists.infradead.org List-Help: List-Post: List-Subscribe: , List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: niko@isl.net.mx said: > for some reason I can not duplicate Disc on chip Millenium (8MB) with > dd command. I can build it using dd, fdisk, nftla_format, erase.... > etc, but not only dd. The DiskOnChip uses NAND flash, which has 'out of band' data areas. A simple dd won't read or write them. Neither would it be sensible to use the nanddump and nandwrite utilities for doing so, although they can - you want to reformat each device individually, with its own bad block map, not the bad block map of your master. nftl_format, mkfs and tar or dump/restore are sensible. What are you partitioning it for, btw? -- dwmw2