test-drb July 1998

test-drb@ccmp.vtda.org

154 participants
898 discussions

taking care of bad sectors... easy stuff. Was: Re: hard

by maxeskin＠hotmail.com

First of all, I think that the latest Norton Utilities are soooo bloated, they possibly won't even run on a damaged computer. High-res pictures of your computer components are the latest thing you need when you can't find a vital data file. For example, what good is it to have a data recovery program you can't run if you just formatted your hard drive? That said, I think NU is a good tool, but Spinrite is still better than NDD. >First of all MS didn't write scandisk... anyone that uses norton tools >should recognize it. it a stripped vendor version the norton tool. > >I have had excellent success with norton tools and still used copies >I've had for over 8years. > >Allison > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

26 years, 5 months

MAD Computer

by franke＠sbs.de

>>Does anyone have a MAD Computer? It was just another boring peecee > MAD = Magnetic Anomoly Detector > Or in other words it's used in Anti-Submarine Warfare. NoNo. MAD = Militaerischer Abschirmdienst (military counter inteligence) > (Sorry couldn't resist, yes I realize in this case this isn't what you meant.) dto :) H. -- Ich denke, also bin ich, also gut HRK

26 years, 5 months

Anyone out there have...

by Anthony.Dellett＠Staples.com

A deceased C128 that would be willing to give up it's keyboard? I need a replacement for the C128 I'm refurbing. Thanks Tony

26 years, 5 months

Off-topic informational anti-spam anecdotal

by peacock＠simconv.com

This is a case of the law being intended (originally) for quite different purposes. The story behind it is that the Nevada Legislature has an email system where the public can send comments to the lawmakers when the Legislature is in session (every other year for a few months). It seems last year someone flamed one of the senior politicians, he got pissed off, claimed it was racially motivated hate mail and tried to outlaw flaming. Someone (the state attorney general) pointed out to him his proposed law violated both free speech and right to petition for redress in the Constitution, but he wouldn't back down and withdraw his bill, so to keep it legal it was changed to an anti-spam law, and in theory flame mail can be legally defined as spam too. No one expects this law to ever be enforced. Jack Peacock -----Original Message----- From: Hans Franke [mailto:franke@sbs.de] USD five ? I don't think ths law will have any impact - very spaming friendly. Just done to get votes but avoide any change.

26 years, 5 months

I'm back!

by kyrrin＠jps.net

Yes, I have returned. Lord Almighty, what a haul!! I can say with confidence that I definitely tested the maximum load specs for the (rented) Ford Windstar minivan. Every time I went over a good bump, the rear springs -almost- bottomed out. I'll be updating my web page soon with the gory details. Suffice to say I've got more than enough to keep me going, project-wise, well into next year. Among the more 'classic' items in the haul were a Kennedy 9100 tape drive installed in a nice 5-foot DEC rack, and a box full of 9-track tapes containing mostly DECUS RT-11 SIG libraries. Tony, I know you'll get a kick out of this. I also got hold of another 11/44 CPU box, loaded with cards (including a Unibus UDA50 disk controller). Between that one and my current unit, I should be able to get the power supply going AND fix the broken one for a spare! Since I'm not heavily into RT-11 (yet), I'd like to offer the RT-11 SIG tapes to whoever's interested and willing to pay shipping. There's about six or so, maybe a couple more. And would you believe I'm already planning next year's run? I know I'll see at least some of you at VCF in another couple of months. Until then... Banzai! ;-) -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272) (Hamateur: WD6EOS) (E-mail: kyrrin(a)jps.net) "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."

26 years, 5 months

hard drive data recovery

by allisonp＠world.std.com

< Alright for some :-). Alas most of us don't have access to a clean room. < Even if I was working at a place which had one, I can't believe they'd be < too happy if I wandered in with an HDA and started stripping it. Majorly true. I worked in pharmaceuticals and though they didn't use super clean rooms (class 10,000 worst case) the equipment was under a laminar airflow curtain with a flow of 100 linear feet per minute and the air under there was class 100. The air flow was obvious ly of the the machine then into the room where super clean was less important. < I would have thought looking for backscattered light would be more < sensitive and easier to set up. Still not sensitive enough for a clean < box, of course (in this form). The air flow and the sensing area cross section are important. Using a light source like a laser is helpful in getting the backscatter brighter. This is the problem of how many Angeles can dance on the end of a pin. You build a clean box and use a good HEPA filter. With 100-200cfm of incomming clean air once the dust in the box has been blown out it will be clean especially if gloved hands are the only thing inside. I'e heard a lot of "good luck", "it will not last" and "too dirty" from those that haven't. I've done it, when RD53s and 54s were in desperately short supply here and it does work without the clean box with some care. Obvious tricks like wearing nylon gloves to avoid finger prints, a canister of dry air to blow things off and keeping the unit covered when possible all reduce risk. Allison

26 years, 5 months

hard drive data recovery

by allisonp＠world.std.com

< I'm not sure what that means, but I assume that the servo surface < contains a sort of coordinate system that the servo head reads and thus < guides the other heads. If that assumption is correct, why isn't it < possible to realign the thing with another servo platter? First it depends if the servo is embedded or dedicated platter or stepper (or other absolute positioner). For dedicated platter one head is assigned as the servo head and since they are all mechanically one assembly the rest just follow along. Now if a platter is changed it's data may be offset relative to the others. Same thing is true for replacing a head as the RELATIVE alignment between heads is disturbed. This case I believer the disk can be low level formatted and reused but existant data may be lost. If servo information does not exist (DeMIL'd drive) it's likely good for parts as servo tracks are hard to regenerate. If it's embedded servo per head each head as selected will follow the selected track servo signals and making relative head alignment less critical. If the servo is blown there is no way to regenerate easily. For cases of absolute positioners like older ST506/412/225/251 (and a swarm of others) drives getting alignment to cylinder 000 and beteeen heads would be critical for complete data recovery. If the drive is to be reformatted however a bulk erase and reformat will establish new tracks in some cases and make a mess in others. In the case of removable pack drives that is a totally different can of worms though simpler as they so have alignment procedures for field or depot use. Allison

26 years, 5 months

European Tour

by cfandt＠servtech.com

At 22:25 14-07-98 -0500, you wrote: >I'm planning to be in Europe for a week or so in October (a few days each >in Holland, Belgium, and Germany). I'd like to sneak in a few nerd-stops >along the way, and I'll make room in my suitcase for a couple of vintage >portables just in case. Any suggestions for the American nerd tourist in >Europe? > Doug, if you indeed do go to Munich to see the Deutches Museum I suggest you set aside at least a _full_ day to see only a couple of sections or several days to see most of the museum. Roller skates or rollerblades would be of great help to see more in less time<g> I'm the type of person who studies a museum and have spent two to four hours in each of the few sections I've visited during the three different visits to the Deutches Museum. As Hans just said in a previous msg in this thread, the computer section is indeed about 12,000 square feet. Loved it! Seriously, I do recommend seeing the collections at Deutches Museum to anybody who may visit Munich. Something for everybody. Check out URL: http://www.deutsches-museum.de/dme01.htm if you're interested. Have fun in Europe, --Chris -- -- Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA Member of Antique Wireless Association URL: http://www.ggw.org/freenet/a/awa/

26 years, 5 months

IBM 3380 HDA

by Marty＠itgonline.com

Yes, dual head positioners on both sides plus four twenty pin connectors on both sides as well. David is correct as well, I have confirmed this HDA is from an IBM 4381 mainframe and uses a 3880 controller. Does this HDA have a lineage that goes back to the IBM Ramac? Any idea when this HDA was introduced? It certainly will make a great paper weight. Marty ______________________________ Reply Separator _________________________________ Subject: Re: IBM 3380 HDA Author: classiccmp(a)u.washington.edu at internet Date: 7/15/98 11:07 AM At 10:59 15-07-98 -0400, you wrote: > I just acquired an IBM 3380 HDA which weighs 70 lbs, and is in a clear > plastic case. Does anybody know the lineage of this? The HDA has IBM > 390X-001 as well as 13-E8719-CJ printed on a label. Good Lord... unless I miss my guess, that's from a System/390 mainframe! Let me guess... dual head positioners on either side, yes? And big connectors with about a zillion pins? -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272) (Hamateur: WD6EOS) (E-mail: kyrrin(a)jps.net) "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..." ------ Message Header Follows ------ Received: from lists3.u.washington.edu by smtp.itgonline.com (PostalUnion/SMTP(tm) v2.1.9i(b5) for Windows NT(tm)) id AA-1998Jul15.110730.1767.51412; Wed, 15 Jul 1998 11:07:31 -0400 Received: from host (lists.u.washington.edu [140.142.56.13]) by lists3.u.washington.edu (8.8.4+UW97.07/8.8.4+UW97.05) with SMTP id IAA07163; Wed, 15 Jul 1998 08:05:18 -0700 Received: from mxu2.u.washington.edu (mxu2.u.washington.edu [140.142.32.9]) by lists.u.washington.edu (8.8.4+UW97.07/8.8.4+UW97.05) with ESMTP id IAA43306 for <classiccmp(a)lists.u.washington.edu>; Wed, 15 Jul 1998 08:05:13 -0700 Received: from repop1.jps.net (repop1.jps.net [208.25.63.34]) by mxu2.u.washington.edu (8.8.4+UW97.07/8.8.4+UW98.06) with ESMTP id IAA07964 for <classiccmp(a)u.washington.edu>; Wed, 15 Jul 1998 08:05:12 -0700 Received: from seleth (sea-port157.jps.net [209.63.189.116]) by repop1.jps.net (8.8.5/8.8.5) with SMTP id IAA07712 for <classiccmp(a)u.washington.edu>; Wed, 15 Jul 1998 08:06:06 -0700 (PDT) Message-Id: <3.0.3.32.19980715080612.00e5b9e0(a)mail.wa.jps.net> Date: Wed, 15 Jul 1998 08:06:12 -0700 Reply-To: classiccmp(a)u.washington.edu Sender: CLASSICCMP-owner(a)u.washington.edu Precedence: bulk From: Bruce Lane <kyrrin(a)jps.net> To: "Discussion re-collecting of classic computers" <classiccmp(a)u.washington.edu> Subject: Re: IBM 3380 HDA In-Reply-To: <1998Jul15.105724.1767.118953(a)smtp.itgonline.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-Sender: kyrrin(a)mail.wa.jps.net X-Listprocessor-Version: 8.1 beta -- ListProcessor(tm) by CREN

26 years, 5 months

MAD Computer

by franke＠sbs.de

> On Tue, 14 Jul 1998, Thomas Pfaff wrote: >> Does anyone have a MAD Computer? It was just another boring peecee >> but I liked the name of the computer. I believe it was the fastest >> computer you could buy for some small amount of time- an early 80386 >> PC running at a whopping 16 mhz. > I e-bumped into a guy who knows *all* about MAD. I've captured some of > his knowledge for posterity: > http://www.yowza.com/classiccmp/mad/ Thanks Doug. Now I know - I have to have a MAD1 - I _must_ have any 80186/88 system ever build - just a obsession - maybe because I like the PC-D a lot .) Gruss H. -- Ich denke, also bin ich, also gut HRK

26 years, 5 months

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test-drb July 1998