Date: Fri, 30 Jul 1999 20:30:41 -0500 From: David Kelly <dkelly@hiwaay.net> To: "Francisco Reyes" <francisco@natserv.com> Cc: "freebsd-scsi@FreeBSD.ORG" <freebsd-scsi@FreeBSD.ORG> Subject: Re: Which SCSI controller with non destructive verify? Message-ID: <199907310130.UAA77182@nospam.hiwaay.net> In-Reply-To: Message from "Francisco Reyes" <francisco@natserv.com> of "Fri, 30 Jul 1999 00:18:38 EDT." <199907300417.AAA20863@vulcan.addy.com>
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"Francisco Reyes" writes: > On Thu, 29 Jul 1999 21:31:07 -0500, David Kelly wrote: > > >> Bus Logic SCSI controller ... verify ... > >> a warning that this would erase my data. > > > >What about: > ># dd if=/dev/sd0 bs=64k of=/dev/null > > Would this be equivalent to what a "verify" from a controller > does? > Doesn't the verify function in a controller tries to write? If the nondestructive verify function writes then it would scare me. I have seen 3rd party Macintosh utilities that were able to read-write-read verify, or a modified version that wrote something else in the middle, then wrote the original data, and read it again just to be sure. Think FWB's Hard Drive Toolkit does this. -- David Kelly N4HHE, dkelly@nospam.hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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