Date: Tue, 17 Mar 1998 19:44:48 -0600 From: David Kelly <dkelly@hiwaay.net> To: Greg Lehey <grog@lemis.com> Cc: David Kelly <dkelly@hiwaay.net>, hardware@FreeBSD.ORG Subject: Re: CD-R and Scanner recomendations for CD archiving of records? Message-ID: <199803180144.TAA20208@nospam.hiwaay.net> In-Reply-To: Message from Greg Lehey <grog@lemis.com> of "Wed, 18 Mar 1998 12:02:01 %2B1030." <19980318120201.47709@freebie.lemis.com>
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Greg Lehey writes: > > Am I missing something here? People keep talking about writing on the > coated side. Why would anybody want to do that? Surely you write on > the other side? > > > Felt tip pens are OK. Anything sharp is sure to ruin the disk (I ruined > > the first bootable FreeBSD install disk I made, worked great before I > > wrote on it). It appears the top surface is more delicate than the > > bottom. > > And I thought the bottom side was the coated side. It appears the disks we're using start with a clear plastic disc, coat the material that gets "burned", then coat the "ink-write on" surface on top of that. The laser still shines thru the plastic which protects the "burned" layer from dirt and scratches. The thinest path thru to the burned layer is from the top. I've seen "gold" CD-R's which appear to have the burning layer sandwiched between plastic, just the way you expect a pressed silver CD. We don't use those because of widespread reports of high error rates in some readers, and in some writers. And blue Verbatim bulk disks were comarably priced. -- 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-hardware" in the body of the message
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