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- Xref: sparky sci.electronics:13612 comp.sys.ibm.pc.hardware:20653
- Path: sparky!uunet!sun-barr!ames!agate!dog.ee.lbl.gov!nosc!crash!slic!mikey
- From: mikey@slic.cts.com (Mike Shirley)
- Newsgroups: sci.electronics,comp.sys.ibm.pc.hardware
- Subject: Re: Airport X-Rays / Testing the integrity of Floppies
- Summary: Airport Screening will not Necessarily Damage Floppies
- Message-ID: <H3JPoB2w165w@slic.cts.com>
- Date: 30 Jul 92 04:38:16 GMT
- References: <1992Jul26.215220.24958@tssi.com>
- Reply-To: mikey@slic.cts.com
- Organization: Muth Valley Seismic Control District, San Diego, CA / Node 2
- Lines: 36
-
- nolan@tssi.com (Michael Nolan) writes:
-
- > On the other hand, I had a 720K 3.5" diskette that I forgot to take out
- > of my computer's carrying case before it went through the X-ray scan and
- > it now gives me read errors, although so far at least a couple of retries
- > has always done the trick. (And I've compared the results with an earlier
- > install and the files are identical.) Given my choice, I'd pull the
- > diskettes from the case.
-
- That certainly is the safest way to play. But for what it's
- worth, I've done the following...
-
- I formated 2 3.5 HD floppies and wrote a 503K ZIP file to each.
-
- I ran disk A through the X-Ray machine 1 time, then walked
- through the metal detector (magnetometer) twice, and lastly ran the
- hand scanner over/around the floppy twice. This was to simulate
- a normal pass through airport security, more or less.
-
- I then took disk B and ran it through the X-Ray machine 10 times,
- then placed the floppy inside the walk-thru metal detector and
- ran it around the 3 walls of the machine, placing the floppy as
- close as possible to the mag coils. I then ran the floppy
- through 10 times as if I were carrying it through normally. Next
- 20 or so passes with the hand-held metal detector.
-
- I then ran "CHKDSK" and "PKUNZIP -t" to test the ZIP file.
- Both floppies passed fine and had identical values before and
- after the "scanning". Our machines are 14 months old and were then
- the "latest in technology" at the time of purchase.
-
- Bottom line, it appears that late model hardware will not cause data
- loss on floppy discs. But, as they say...your mileage may vary...
-
- --
- Mike, WB6WUI // INET: mikey@slic.cts.com // GEnie: SLIC
-