Re: How to use dmsetuup?

From	gene heskett <gheskett@shentel.net>
Newsgroups	linux.debian.user
Subject	Re: How to use dmsetuup?
Date	2023-11-05 05:10 +0100
Message-ID	<HwCCt-3dwH-1@gated-at.bofh.it> (permalink)
References	(5 earlier) <Hwwx3-39Be-15@gated-at.bofh.it> <Hwxjr-3a6e-3@gated-at.bofh.it> <Hwypb-3aI2-3@gated-at.bofh.it> <HwzEB-3bsm-1@gated-at.bofh.it> <HwBQ5-3d0u-7@gated-at.bofh.it>
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On 11/4/23 23:15, David Christensen wrote:
> On 11/4/23 17:55, gene heskett wrote:
> 
>> FWIW the rw's I have and that continue to work, are Sony DVD+RW, well 
>> over 5 years old now. I understand there is a DVD-RW but I've no 
>> experience with them.  Today my objection is the size. In comparison 
>> to a system driving 3d printers with gcode from Cura-5.4 that is not 
>> rolled up into subroutine loops, I have some of the more complex and 
>> large parts part files that will not fit on a dvd. So it simply 
>> impractical for me to back up to a measly 4.7Gig dvd.
> 
> 
> That's why they invented Blu-ray:
> 
>      https://en.wikipedia.org/wiki/Blu-ray
> 
>      25 GB (single-layer)
>      50, 66 GB (dual-layer)
>      100, 128 GB (BDXL)
>      (Up to four layers are possible in a standard form BD)
> 
> 
> David
> 
Shudder. Anything mechanical can be destroyed by a smoke particle 100x 
to small to be seen with a good eye. I am a CET & Electronics in general 
I understand the physics of, and in electronics the only thing moving is 
a few electrons here or there. As long as the voltage does not force an 
electron thru the oxide layer that is the capacitors insulation, forming 
a leakage path that avalanches thru the oxide film and essentially 
destroys the device, there is no physical reason that it will not 
continue to do its jobs for hundreds or thousands of years. It will be 
external environmental effects that will eventually reach the chip and 
byproducts of the humidity let in by the breach of the package sealing 
that finally destroys it.

The size of a bit that is detectable on a disk is determined by the 
wavelegth of the light reading that bit, cd's were designed with the IR 
lasers of the day, which emmit light in the 1100 nanometer range. Far 
infrared IOW. DVD's were made possible with a shorter visible light 
laser, then blue rays got that down to abut 400 nanometers. The next gen 
of those will have a uv laser  but we'll have to invent it first. But 
part of that problem is that decent optical glass for the lenses does 
not pass UV to a usable amount. Plastic lets it blast on thru but can we 
make plastic lenses that precisely for the price bleeding edge users 
will pay? IDK.
> .

Cheers, Gene Heskett.
-- 
"There are four boxes to be used in defense of liberty:
  soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
  - Louis D. Brandeis

Thread

How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-03 17:30 +0100
  Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-03 17:50 +0100
  Re: How to use dmsetuup? Stefan Monnier <monnier@iro.umontreal.ca> - 2023-11-03 18:10 +0100
  Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-03 22:50 +0100
    Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-04 01:00 +0100
      Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-04 01:50 +0100
  Re: How to use dmsetuup? "Andrew M.A. Cater" <amacater@einval.com> - 2023-11-03 23:20 +0100
    Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-04 01:10 +0100
    Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-04 12:50 +0100
      Re: How to use dmsetuup? <tomas@tuxteam.de> - 2023-11-04 14:50 +0100
        Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-04 18:30 +0100
          Re: How to use dmsetuup? tomas@tuxteam.de - 2023-11-04 19:40 +0100
            Re: How to use dmsetuup? debian-user@howorth.org.uk - 2023-11-04 21:50 +0100
          Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-04 22:40 +0100
            Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-04 23:30 +0100
              Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-05 00:40 +0100
                Re: How to use dmsetuup? yxcv@vienna.at - 2023-11-05 01:10 +0100
                Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-05 02:00 +0100
                Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-05 04:20 +0100
                Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-05 05:10 +0100
                Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-05 07:50 +0100
                Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-05 10:50 +0100
                Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-05 11:30 +0100
                Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-05 16:30 +0100
                Re: How to use dmsetuup? "Thomas Schmitt" <scdbackup@gmx.net> - 2023-11-05 09:10 +0100
                Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-05 21:20 +0100
                Re: How to use dmsetuup? debian-user@howorth.org.uk - 2023-11-05 21:50 +0100
                Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-05 23:30 +0100
                Re: How to use dmsetuup? "Thomas Schmitt" <scdbackup@gmx.net> - 2023-11-05 23:20 +0100
                Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-05 23:50 +0100
                Re: How to use dmsetuup? "Thomas Schmitt" <scdbackup@gmx.net> - 2023-11-06 08:40 +0100
                xorriso and SIGTERM/SIGINT handler (was: Re: How to use dmsetuup?) Max Nikulin <manikulin@gmail.com> - 2023-11-06 05:30 +0100
                Re: xorriso and SIGTERM/SIGINT handler "Thomas Schmitt" <scdbackup@gmx.net> - 2023-11-06 09:00 +0100
        Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-04 23:10 +0100
  Re: How to use dmsetuup? Andy Smith <andy@strugglers.net> - 2023-11-04 10:40 +0100
    Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-04 13:30 +0100
  Re: How to use dmsetuup? Franco Martelli <martellif67@gmail.com> - 2023-11-06 16:50 +0100
    Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-06 17:30 +0100
    Re: How to use dmsetuup? Tom Dial <tddial@comcast.net> - 2023-11-08 00:50 +0100
      Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-08 01:30 +0100
        Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-08 06:10 +0100
        Re: How to use dmsetuup? <tomas@tuxteam.de> - 2023-11-08 06:40 +0100
          Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-08 11:30 +0100
            Re: How to use dmsetuup? "Andrew M.A. Cater" <amacater@einval.com> - 2023-11-08 19:10 +0100
              Re: How to use dmsetuup? jeremy ardley <jeremy.ardley@gmail.com> - 2023-11-08 23:00 +0100
            Re: How to use dmsetuup? Tom Dial <tddial@comcast.net> - 2023-11-09 02:10 +0100
            Re: How to use dmsetuup? David Christensen <dpchrist@holgerdanske.com> - 2023-11-11 01:50 +0100
              Re: How to use dmsetuup? gene heskett <gheskett@shentel.net> - 2023-11-11 04:30 +0100
                Hardware for a back up server? [WAS Re: How to use dmsetuup?] "Andrew M.A. Cater" <amacater@einval.com> - 2023-11-11 18:00 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Stefan Monnier <monnier@iro.umontreal.ca> - 2023-11-11 18:10 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Pocket <pocket@columbus.rr.com> - 2023-11-11 18:40 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Stefan Monnier <monnier@iro.umontreal.ca> - 2023-11-11 19:50 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Pocket <pocket@columbus.rr.com> - 2023-11-11 21:50 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] gene heskett <gheskett@shentel.net> - 2023-11-11 22:40 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Jeffrey Walton <noloader@gmail.com> - 2023-11-11 22:10 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Jeffrey Walton <noloader@gmail.com> - 2023-11-12 00:30 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Dan Ritter <dsr@randomstring.org> - 2023-11-12 00:40 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] fxkl47BF@protonmail.com - 2023-11-11 18:30 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] David Christensen <dpchrist@holgerdanske.com> - 2023-11-12 01:10 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Stefan Monnier <monnier@iro.umontreal.ca> - 2023-11-12 05:40 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Anssi Saari <anssi.saari@debian-user.mail.kapsi.fi> - 2023-11-13 11:40 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Stefan Monnier <monnier@iro.umontreal.ca> - 2023-11-13 14:00 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Andy Smith <andy@strugglers.net> - 2023-11-12 14:20 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] David Christensen <dpchrist@holgerdanske.com> - 2023-11-12 19:40 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] "Andrew M.A. Cater" <amacater@einval.com> - 2023-11-12 18:20 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] David Christensen <dpchrist@holgerdanske.com> - 2023-11-12 20:30 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Stefan Monnier <monnier@iro.umontreal.ca> - 2023-11-12 21:20 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] <tomas@tuxteam.de> - 2023-11-13 06:40 +0100
                Linux supprt (was: Hardware for a back up server? [WAS Re: How to use dmsetuup?]) Stefan Monnier <monnier@iro.umontreal.ca> - 2023-11-13 13:50 +0100
                Re: Linux supprt (was: Hardware for a back up server? [WAS Re: How to  use dmsetuup?]) Larry Martell <larry.martell@gmail.com> - 2023-11-13 16:00 +0100
                Re: Linux supprt Stefan Monnier <monnier@iro.umontreal.ca> - 2023-11-13 16:40 +0100
                Re: Linux supprt Nicholas Geovanis <nickgeovanis@gmail.com> - 2023-11-13 22:50 +0100
                Re: Linux supprt John Hasler <john@sugarbit.com> - 2023-11-13 19:00 +0100
                Re: Linux supprt <tomas@tuxteam.de> - 2023-11-13 19:40 +0100
                Re: Linux supprt Nicholas Geovanis <nickgeovanis@gmail.com> - 2023-11-14 18:40 +0100
                Re: Linux supprt <tomas@tuxteam.de> - 2023-11-14 18:50 +0100
                Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?] Joe <joe@jretrading.com> - 2023-11-13 15:10 +0100
        Re: How to use dmsetuup? Tom Dial <tddial@comcast.net> - 2023-11-09 01:50 +0100
          Re: How to use dmsetuup? Andy Smith <andy@strugglers.net> - 2023-11-09 16:20 +0100
            Re: How to use dmsetuup? debian-user@howorth.org.uk - 2023-11-09 17:50 +0100

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