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Re: Cooling a HP desktop

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On 2026-06-07 20:46, Paul wrote:
> On Sun, 6/7/2026 8:55 AM, Carlos E.R. wrote:
> 
>>
>> :-)
>>
>> When Personal Computers boom started, some navy chap here though of buying one
>> for the submarine he worked at. So he bought I think it was, an Amstrad 1512 PC
>> from a shop, with a warranty. The computer run fine, till they put out to sea.
>>
>> So they had the computer replaced.
>>
>> And it broke down again.
>>
>> Then the shop owner asked where exactly are you using it? They told him, in a navy submarine. The shop removed the warranty instantly.
>>
>> The vibrations from the diesel were killing the hard disk, way faster than temperatures or humidity :-D
> 
> They look a lot like hard drives, but apparently
> the arm isn't as rigid as a modern arm. And the air pressure
> under the head might be different as well (as a cushion).

That computer had a hard disk with a head that moved with a step motor. 
I don't know if it was like your photo.

>     http://www.binarydevotion.com/wp-content/uploads/2011/02/ST251.jpg
> 
> It's too bad there wasn't NAND flash back then.
> 
> I wonder if floppy diskettes would have been a good option for a submarine ?

Maybe.

> They could have used a machine with "dual floppy", as that is a handy
> setup for making backups. The "single floppy" computers were a pain in
> the ass, to clone a floppy. The RAM on the computer is not big enough to
> hold the floppy contents, and copying an entire floppy required flipping
> in disc 1 and disc 2, over and over again, until the transfer was finished.
> When a machine had two floppy drives, it "was like Heaven" :-)

Indeed. I realized that before purchasing, so my first machine had two 
360K floppies :-)

	No hard disk. Some friend had a 10 MB HD and complained it was over 
full. I could not understand how he could fill that lot of disk space.

I wonder why those people wanted a computer in the submarine. Was it for 
job things, or for playing? :-)

I'll never know.

-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

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Cooling a HP desktop sticks <wolverine01@charter.net> - 2026-05-31 19:07 -0500
  Re: Cooling a HP desktop sticks <wolverine01@charter.net> - 2026-05-31 20:31 -0500
    Re: Cooling a HP desktop Paul <nospam@needed.invalid> - 2026-05-31 23:19 -0400
      Re: Cooling a HP desktop sticks <wolverine01@charter.net> - 2026-06-01 15:15 -0500
        Re: Cooling a HP desktop Paul <nospam@needed.invalid> - 2026-06-01 22:31 -0400
          Re: Cooling a HP desktop sticks <wolverine01@charter.net> - 2026-06-03 17:18 -0500
            Re: Cooling a HP desktop Paul <nospam@needed.invalid> - 2026-06-03 19:45 -0400
              Re: Cooling a HP desktop sticks <wolverine01@charter.net> - 2026-06-04 09:23 -0500
                Re: Cooling a HP desktop Paul <nospam@needed.invalid> - 2026-06-04 13:26 -0400
                Re: Cooling a HP desktop sticks <wolverine01@charter.net> - 2026-06-06 10:38 -0500
                Re: Cooling a HP desktop "Carlos E.R." <robin_listas@es.invalid> - 2026-06-06 19:19 +0200
                Re: Cooling a HP desktop Paul <nospam@needed.invalid> - 2026-06-07 03:09 -0400
                Re: Cooling a HP desktop "Carlos E.R." <robin_listas@es.invalid> - 2026-06-07 14:55 +0200
                Re: Cooling a HP desktop Paul <nospam@needed.invalid> - 2026-06-07 14:46 -0400
                Re: Cooling a HP desktop "Carlos E.R." <robin_listas@es.invalid> - 2026-06-07 23:18 +0200
                Re: Cooling a HP desktop Paul <nospam@needed.invalid> - 2026-06-07 18:56 -0400
                Re: Cooling a HP desktop Paul <nospam@needed.invalid> - 2026-06-07 22:09 -0400

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