Date: Sun, 21 Jul 2002 21:09:30 -0700 (PDT) From: Frank Mayhar <frank@exit.com> To: "Greg 'groggy' Lehey" <grog@FreeBSD.ORG> Cc: FreeBSD-hardware@FreeBSD.ORG, FreeBSD-scsi@FreeBSD.ORG Subject: Re: Seeking beyond EOF on SCSI DDS tapes Message-ID: <200207220409.g6M49Uo4002966@realtime.exit.com> In-Reply-To: <20020722033643.GA80263@wantadilla.lemis.com>
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Greg 'groggy' Lehey wrote: > 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? An 'mt -f /dev/nrsa0 fsf' a couple of times should get you past the file mark. Then just dd. -- Frank Mayhar frank@exit.com http://www.exit.com/ Exit Consulting http://www.gpsclock.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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