Date: Sun, 3 May 2020 21:56:16 +0200 From: Christoph Kukulies <kuku@kukulies.org> To: freebsd-questions@freebsd.org Subject: dd: /dev/cd0: Invalid argument Message-ID: <B0B4F1EA-8BAC-467F-A399-A0DC2720C149@kukulies.org>
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I got a bit further with seeing my old SCSI-Periphals on the external = SCSI bus connected to the sym0 (ASUS SC-200 Interface). I can dd one of the disks connected there (/dev/da0) completely (2GB) But I cannot dd if=3D/dev/cd0 of=3Dcd_dump=20 Doing this, I=E2=80=99m getting=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 What=E2=80=99s wrong? /dev/da0 and /dev/cd0 are both character devices. = I can well cat /dev/cd0 >dump . =E2=80=94 Christoph
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