From owner-freebsd-questions@freebsd.org Sun May 3 20:45:42 2020 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D18142E77C6 for ; Sun, 3 May 2020 20:45:42 +0000 (UTC) (envelope-from kuku@kukulies.org) Received: from mail.kukulies.org (mail.kukulies.org [116.203.115.43]) by mx1.freebsd.org (Postfix) with ESMTP id 49FdKy0Czhz49dc for ; Sun, 3 May 2020 20:45:41 +0000 (UTC) (envelope-from kuku@kukulies.org) Received: from localhost (localhost [127.0.0.1]) by mail.kukulies.org (Postfix) with ESMTP id 1851F10276A for ; Sun, 3 May 2020 22:45:41 +0200 (CEST) Received: from mail.kukulies.org ([127.0.0.1]) by localhost (mail.kukulies.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8ZnD-z3mSiq6 for ; Sun, 3 May 2020 22:45:40 +0200 (CEST) Received: from christophs-mbp.fritz.box (p57A1FCC2.dip0.t-ipconnect.de [87.161.252.194]) by mail.kukulies.org (Postfix) with ESMTPSA id BDF98102769 for ; Sun, 3 May 2020 22:45:40 +0200 (CEST) From: Christoph Kukulies Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) Subject: Re: dd: /dev/cd0: Invalid argument Date: Sun, 3 May 2020 22:45:40 +0200 References: To: freebsd-questions@freebsd.org In-Reply-To: Message-Id: <620830DD-8E3C-445F-9FF5-5CDE1A51D1D2@kukulies.org> X-Mailer: Apple Mail (2.3608.80.23.2.2) X-Rspamd-Queue-Id: 49FdKy0Czhz49dc X-Spamd-Bar: ++ Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of kuku@kukulies.org has no SPF policy when checking 116.203.115.43) smtp.mailfrom=kuku@kukulies.org X-Spamd-Result: default: False [2.03 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; NEURAL_HAM_MEDIUM(-0.61)[-0.608,0]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; TO_DN_NONE(0.00)[]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; RCVD_COUNT_THREE(0.00)[4]; DMARC_NA(0.00)[kukulies.org]; NEURAL_SPAM_LONG(0.85)[0.849,0]; R_SPF_NA(0.00)[]; RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:116.203.0.0/16, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; IP_SCORE(0.29)[ipnet: 116.203.0.0/16(2.96), asn: 24940(-1.50), country: DE(-0.02)]; RECEIVED_SPAMHAUS_PBL(0.00)[194.252.161.87.khpj7ygk5idzvmvt5x4ziurxhy.zen.dq.spamhaus.net : 127.0.0.10] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 May 2020 20:45:42 -0000 Aah, I got it: dd if=3D/dev/cd0 of=3Dcd0_dump ibs=3D2048 =E2=80=94 Christoph > Am 03.05.2020 um 21:56 schrieb Christoph Kukulies : >=20 > I got a bit further with seeing my old SCSI-Periphals on the external = SCSI bus connected to the sym0 (ASUS SC-200 Interface). >=20 > I can dd one of the disks connected there (/dev/da0) completely (2GB) >=20 > But I cannot dd if=3D/dev/cd0 of=3Dcd_dump=20 >=20 > Doing this, I=E2=80=99m getting=20 >=20 > $ dd if=3D/dev/cd0 of=3Dcd_dump > dd: /dev/cd0: Invalid argument > 0+0 records in > 0+0 records out > 0 bytes transferred in 0.000199 secs (0 bytes/sec) > $=20 >=20 > What=E2=80=99s wrong? /dev/da0 and /dev/cd0 are both character = devices. I can well cat /dev/cd0 >dump . >=20 >=20 > =E2=80=94 > Christoph >=20 > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to = "freebsd-questions-unsubscribe@freebsd.org"