From owner-freebsd-hardware Sun Jul 21 20:36:50 2002 Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B04C937B400; Sun, 21 Jul 2002 20:36:47 -0700 (PDT) Received: from wantadilla.lemis.com (wantadilla.lemis.com [192.109.197.80]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9B15D43E3B; Sun, 21 Jul 2002 20:36:46 -0700 (PDT) (envelope-from grog@lemis.com) Received: by wantadilla.lemis.com (Postfix, from userid 1004) id F0C9681434; Mon, 22 Jul 2002 13:06:43 +0930 (CST) Date: Mon, 22 Jul 2002 13:06:43 +0930 From: Greg 'groggy' Lehey To: FreeBSD-hardware@FreeBSD.org, FreeBSD-scsi@FreeBSD.org Subject: Seeking beyond EOF on SCSI DDS tapes Message-ID: <20020722033643.GA80263@wantadilla.lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.99i Organization: The FreeBSD Project Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.FreeBSD.org/ X-PGP-Fingerprint: 9A1B 8202 BCCE B846 F92F 09AC 22E6 F290 507A 4223 Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Idiot that I am, I managed to overwrite the beginning of an important tape backup with a small quantity of other data. The backup is on a DDS-4 cartridge, a total of 31 separate files containing about 35 GB of data. It's clear that the first one or two files have been overwritten, but after that the original data is still on the tape, and since it's in separate files, it should be readable--*if* I can get to it. All positioning commands that I know stop after a double tape mark. Is there any diagnostic command which can get beyond the double tape mark? Greg -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message