wiped disk - no longer bootable

[Gary Curtin]

>On Thu, 11 Jul 2019 11:15:24 -0400, Gene Heskett wrote:
>>Well, me being both a retired tech, a C.E.T. and basicly a belt and
>>suspenders type in this regard, I also will be wearing a "ground me"
>>wrist band.  Those things are cheap enough, 2 or 3 bucks, that you
>>should always snap it on before touching what is today, nearly 100%
>>CMOS based circuitry. I also make heavy use of one of those $14 AC
>>sniffers. We still have in most pre-NEC built houses, and even in
>>stuff built 20 years post-NEC 3 pin electrical plugs that aren't
>>properly wired by incompetent carpenters.  You can get those gizmo's
>>from your nearest home center, electrical aisle.
>>
>>When I married this lady in '89, I moved into a house she'd bought
>>in '81. Since there weren't any children to consider, I took the 3rd,
>>smaller bedroom and made it into my computer den. First thing in the
>>next storm, blowed a modem.  Replaced it, blew it again. I took the
>>sockets out, verified they were wired right and soldered them with a
>>silver bearing solder, going all the way back to the service, found it
>>wasn't properly grounded and fixed that. That was 18 years ago, and I
>>haven't lost a single piece of gear since. I don't care if lightning
>>hits my service pole and sends me a quarter million volt surge, but if
>>everything is properly bonded so that everything bounces in unison,
>>nothing will be hurt.  I've since built a wired workshed and a garage,
>>that needed a new 200 amp service, so this house is now a subcircuit.
>>And I still seem to be safe.
>
>Old houses are an electric nightmare. I suffer from potential
>difference between one power outlet to another. Connect a grounded
>guitar amp to one power outlet and connect my single coil guitar with
>grounded strings and then touch the grounded metal case of my mixing
>console connected to another power outlet, while at the same time you
>touch the strings and have fun.
>
>Not to mention that when I worked for Brauner Microphones we had just
>one isolating transformer, most of the gear was directly connected to
>the power outlets and the RCCB was dimensioned for heavy agricultural
>gear, since the manufactory was a farm in the first place.
>
>Nowadays at home, I don't own a transformer for galvanic isolation at
>all, but at least the RCCB has got a sane value.
>
>

I thought this list was for "Ubuntu user technical support, not for 
general discussions".

Maybe soldering and galvanic isolation are linked to my favourite OS, 
but I just can't see it. What am I missing?

Gary