CentOS on home machine HD

[Jerry Feldman]

On 02/07/2014 01:20 PM, Tim wrote:
> Allegedly, on or about 07 February 2014, Roger sent:
>> Is it possible, while the pc is switched on during the day to use the 
>> CentOS as a server for development without affecting or accessing my 
>> working Linux installations? 
> Unless you're sharing some drive space between each installation (such
> as a common swap partition, or things like sharing the user data
> directories between each OS), then one OS doesn't do anything to the
> other operating systems.
>
> I've done that sort of thing before - having totally independent
> multiple installs in one PC, and having shared data directories between
> them.
>
> You shouldn't need to unplug a drive to make a fresh install clean from
> any other installs, however it does make easier to avoid accidentally
> selecting the wrong drive to install to.  But, on the other hand, if
> you're changing what drives are plugged in, or playing with BIOS options
> for which one to boot up, the system may identify each drive differently
> (e.g. what was considered the first and second drives might be numbered
> differently).
>
>
>> Will a thompson gateway TG782T ADSL modem/router be sufficient to act
>> as a basic server modem for the above proposal.
> Never seen one, but just Googling the name produced several links about
> problems with them.
>
> Over the years, I've gone through about three ADSL modem/routers, two of
> them Billion's, and another that I can't recall.  All were much of a
> muchness, worked well enough until random technical failures occurred,
> as any electronic device may suffer from.  
>
> Some routers overheat, badly, because the casing is a bad design,
> air-flow wise, but you can circumvent that by sticking a fan next to
> them.
>
> I'm inclined to believe that my problems stem from how most domestic
> ethernet ports are not floating transformer coupled on the data lines.
> So any ground loops between the equipment can stress them.  It gets
> worse when you interconnect equipment across different rooms or
> buildings, especially when equipment uses ungrounded switchmode power
> supplies.  Expensive routers/switchers use galvanically isolated
> ethernet ports that avoid that problem (there's a signal transformer
> between inputs and outputs, with only a magnetic coupling between each
> side of the transformer, and they're rated to handle significant
> undesired interferring signal voltages without dying).
>
>
One issue might be the sharing of your home directory. Usually the issue
is with the desktop and the dot files.

-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix
PGP key id:3BC1EB90 
PGP Key fingerprint: 49E2 C52A FC5A A31F 8D66  C0AF 7CEA 30FC 3BC1 EB90


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