[Tfug] Partition Second Drive

Sat Oct 28 18:30:31 MST 2006

Right Bexley.  That's exactly what I meant to say but didn't know how.  
Regarding the guy with the 100 OS', I guess it's just a proof of concept 
thing.  On the site, he stated that he had just started using Linux 18 
months before he did this to prove how easy Linux is to work with.  Can't 
imagine how it would be too useful but, what do I know.

>From: Bexley Hall <bexley401 at yahoo.com>
>Reply-To: Tucson Free Unix Group <tfug at tfug.org>
>To: Tucson Free Unix Group <tfug at tfug.org>
>Subject: Re: [Tfug] Partition Second Drive
>Date: Thu, 26 Oct 2006 17:56:10 -0700 (PDT)
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>
>--- DON KIERZEK <donkzk at msn.com> wrote:
>
> > My googling tells me the MBR can only directly boot
> > a primary active partition but can load LILO or GRUB
> > which then boots OS's in other locations.
>
>The MBR is just a piece of code on the (PC) disk.
>The BIOS is the thing that gives significance to the
>MBR as the BIOS loads this into memory and executes
>it at power up.  That "MBR" could, in turn, load
>*another* chunk of code off the disk -- or
>anything else it wants to do.  MS's "standard"
>MBR code has space for 4 partitions and *conventions*
>by which it marks one of those "active" (bootable),
>etc.  You could rewrite and replace this record
>with your own code to do whatever you want -- if
>you want to adopt your own scheme, etc.  Some
>OS's have *three* level bootstraps... "boot sector"
>has a piece of code that loads *another* SMARTER
>(and larger) piece of code which, in turn, loads
>a file from a real file system (hence the SMARTER
>code has to know how to interpret that file system)
>
>Replacing the boot loader with "something smarter"
>changes all of the rules about how many partitions
>you can have, etc.  And, some OS's further cut
>those partitions into "slices" (onto which,
>filesystems can be built).
>
>[snip]
>
> > about a guy who has over 100 os's installed on one
> > computer with a fairly detailed description about
> > how he did it.  Guess he has a lot of free time,
> > interesting though.
>
><grin>  Hard to imagine 100 OS's with something
>to *offer*!  :>
>
>I run Inferno on Windows98 *inside* a CDE window
>on a SPARC (i.e. non x86) machine -- so, three
>*layers* of OS!  (I wonder if I could get Squeak
>to run under Inferno??  :>)
>
>--don
>
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